Cumulative Frequency Diagrams (Edexcel IGCSE Maths)

Exam Questions

3 hours35 questions
1a
Sme Calculator
1 mark

The table shows information about the speeds of space 100 spacelorries.

Speed (bold italic s) in km/h Frequency
0 less than s less-than or slanted equal to 20 2
20 less than s less-than or slanted equal to 40 9
40 less than s less-than or slanted equal to 60 23
60 less than s less-than or slanted equal to 80 31
80 less than s less-than or slanted equal to 100 27
100 less than s less-than or slanted equal to 120 8

Complete the cumulative frequency table for this information.

Speed (bold italic s) in km/h Cumulative frequency
0 less than s less-than or slanted equal to 20 2
0 less than s less-than or slanted equal to 40  
0 less than s less-than or slanted equal to 60  
0 less than s less-than or slanted equal to 80  
0 less than s less-than or slanted equal to 100  
0 less than s less-than or slanted equal to 120  
1b
Sme Calculator
2 marks

On the grid, draw a cumulative frequency graph for your table.

q5a-easy-6-4-cumulative-frequency-edexcel-gcse-maths

1c
Sme Calculator
2 marks

Find an estimate for the number of lorries with a speed of more than space 90 spacekm/h.

Did this page help you?

2a
Sme Calculator
2 marks

There arespace 200 spaceworkers at a factory.
The cumulative frequency table gives information about their ages.

Age (bold italic a years) Cumulative frequency
0 less than a less-than or slanted equal to 20 25
0 less than a less-than or slanted equal to 30 70
0 less than a less-than or slanted equal to 40 138
0 less than a less-than or slanted equal to 50 175
0 less than a less-than or slanted equal to 60 186
0 less than a less-than or slanted equal to 70 194
0 less than a less-than or slanted equal to 80 200

On the grid, draw a cumulative frequency graph for this information.

nov-2014-1ma1-1h-q16

2b
Sme Calculator
2 marks

Graham says,
   "10% of workers at the factory are older than 65"

Is Graham correct?
You must show how you get your answer.

Did this page help you?

3a
Sme Calculator
1 mark

Sue works for a company that delivers parcels.

One day the company delivered space 80 spaceparcels.
The table shows information about the weights, in kg, of these parcels.

Weight ( bold italic w kg) Frequency
0 less than w less-than or slanted equal to 1 19
1 less than w less-than or slanted equal to 2 17
2 less than w less-than or slanted equal to 3 15
3 less than w less-than or slanted equal to 4 12
4 less than w less-than or slanted equal to 5 10
5 less than w less-than or slanted equal to 6 7

Complete the cumulative frequency table.

Weight ( bold italic w kg) Cumulative frequency
0 less than w less-than or slanted equal to 1  
0 less than w less-than or slanted equal to 2  
0 less than w less-than or slanted equal to 3  
0 less than w less-than or slanted equal to 4  
0 less than w less-than or slanted equal to 5  
0 less than w less-than or slanted equal to 6  
3b
Sme Calculator
2 marks

On the grid opposite, draw a cumulative frequency graph for your table.

PLKM_EeP_q7b-easy-6-4-cumulative-frequency-edexcel-gcse-maths

3c
Sme Calculator
3 marks

Sue says,

   "75 % of the parcels weigh less than 3.4 kg."

Is Sue correct?
You must show how you get your answer.

Did this page help you?

4a
Sme Calculator
1 mark

The table gives information about the marks gained by some students in an exam.

Mark (bold italic m) Frequency
0 less than m less-than or slanted equal to 20 40
20 less than m less-than or slanted equal to 40 70
40 less than m less-than or slanted equal to 60 60
60 less than m less-than or slanted equal to 80 15
80 less than m less-than or slanted equal to 100 10
100 less than m less-than or slanted equal to 120 5

Complete the cumulative frequency table for this information.

Mark (bold italic m) Cumulative frequency
0 less than m less-than or slanted equal to 20  
0 less than m less-than or slanted equal to 40  
0 less than m less-than or slanted equal to 60  
0 less than m less-than or slanted equal to 80  
0 less than m less-than or slanted equal to 100  
0 less than m less-than or slanted equal to 120  
4b
Sme Calculator
2 marks

On the grid, draw a cumulative frequency graph for your table.

4c
Sme Calculator
2 marks
Use your graph to find an estimate for the number of students who gained a mark of more than 54.

Did this page help you?

5
Sme Calculator
2 marks

The cumulative frequency graph shows some information about the heights, in cm, of 60 students.

vzb~QiEm_q9-easy-6-4-cumulative-frequency-edexcel-gcse-maths

Work out an estimate for the number of these students with a height greater than 160 cm.

Did this page help you?

6a
Sme Calculator
1 mark

The cumulative frequency graph shows information about the weights of 60 apples.

L~Se3n4d_q10a-easy-6-4-cumulative-frequency-edexcel-gcse-maths

Use the graph to find an estimate for the median weight.

6b
Sme Calculator
2 marks

Use the graph to find an estimate for the interquartile range of the weights.

Did this page help you?

7a
Sme Calculator
1 mark

The grouped frequency table gives information about the times, in minutes, that 80 office workers take to get to work. 

Time (bold italic t minutes) Frequency
0 less than t less-than or slanted equal to 20 5
20 less than t less-than or slanted equal to 40 30
40 less than t less-than or slanted equal to 60 20
60 less than t less-than or slanted equal to 80 15
80 less than t less-than or slanted equal to 100 8
100 less than t less-than or slanted equal to 120 2

Complete the cumulative frequency table.

Time (bold italic t minutes) Cumulative frequency
0 less than t less-than or slanted equal to 20  
0 less than t less-than or slanted equal to 40  
0 less than t less-than or slanted equal to 60  
0 less than t less-than or slanted equal to 80  
0 less than t less-than or slanted equal to 100  
0 less than t less-than or slanted equal to 120  
7b
Sme Calculator
2 marks

On the grid, draw the cumulative frequency graph for this information.

q11b-easy-6-4-cumulative-frequency-edexcel-gcse-maths

7c
Sme Calculator
3 marks

Use your graph to find an estimate for the percentage of these office workers who take more than 90 minutes to get to work.

Did this page help you?

8a
Sme Calculator
1 mark

The frequency table gives information about the ages of the 80 people in a train carriage.

Age (bold italic a bold spaceyears) Frequency
0 space less than space a space less-than or slanted equal to space 20 9
20 space less than space a space less-than or slanted equal to space 30 19
30 space less than space a space less-than or slanted equal to space 40 17
40 space less than space a space less-than or slanted equal to space 50 18
50 space less than space a space less-than or slanted equal to space 60 13
60 space less than space a space less-than or slanted equal to space 70 4

Complete the cumulative frequency table.

Age (bold italic a years) Cumulative frequency
0 space less than space a space less-than or slanted equal to space 20  
0 space less than space a space less-than or slanted equal to space 30  
0 space less than space a space less-than or slanted equal to space 40  
0 space less than space a space less-than or slanted equal to space 50  
0 space less than space a space less-than or slanted equal to space 60  
0 space less than space a space less-than or slanted equal to space 70  

8b
Sme Calculator
2 marks

On the grid, draw a cumulative frequency graph for your table.

q11b-paper1hr-nov2020-edexcel-igcse-maths

8c
Sme Calculator
2 marks

Use your graph to find an estimate for the median age of the people in the train carriage.

........................................... years 

Did this page help you?

9
Sme Calculator
2 marks

20 students each record the mass, p grams, of their pencil case.
The table below shows the results.

Mass
(p grams)

0 less than p less or equal than 50 50 less than p less or equal than 100 100 less than p less or equal than 125 125 less than p less or equal than 150 150 less than p less or equal than 200
Frequency 2 5 4 6 3

Use the frequency table to complete the cumulative frequency table.

Mass
(p grams)
space p less or equal than 50 space p less or equal than 100 space p less or equal than 125 space p less or equal than 150 space p less or equal than 200
Cumulative frequency         20

 

Did this page help you?

1a
Sme Calculator
1 mark

Charlotte grows some potatoes.

The table shows information about the weights of her potatoes.

 Weight (bold italic w grams)  Frequency
100 less than w less-than or slanted equal to 120 5
120 less than w less-than or slanted equal to 140 25
140 less than w less-than or slanted equal to 160 30
160 less than w less-than or slanted equal to 180 15
180 less than w less-than or slanted equal to 200 5

Complete the cumulative frequency table.

 Weight (bold italic w grams) Cumulative frequency
100 less than w less-than or slanted equal to 120  
100 less than w less-than or slanted equal to 140  
100 less than w less-than or slanted equal to 160  
100 less than w less-than or slanted equal to 180  
100 less than w less-than or slanted equal to 200  
1b
Sme Calculator
2 marks

On the grid opposite, draw a cumulative frequency graph for your table.

x_jTmCoZ_q7b-medium-6-4-cumulative-frequency-edexcel-gcse-maths

1c
Sme Calculator
2 marks

Use your graph to find an estimate for the interquartile range.

1d
Sme Calculator
3 marks

Use your graph to find an estimate for the percentage of Charlotte's potatoes with a weight less than 150 grams.

Did this page help you?

2a
Sme Calculator
3 marks

The table below shows information about the heights of 60 students.

Height (bold italic x cm) Number of students
140 less than x less-than or slanted equal to 150 4
150 less than x less-than or slanted equal to 160 5
160 less than x less-than or slanted equal to 170 16
170 less than x less-than or slanted equal to 180 27
180 less than x less-than or slanted equal to 190 5
190 less than x less-than or slanted equal to 200 3

On the grid opposite, draw a cumulative frequency graph for the information in the table.

2b
Sme Calculator
3 marks

TUVVKr2T_q8b-medium-6-4-cumulative-frequency-edexcel-gcse-maths

Find an estimate

i)
for the median,
[2]
ii)
for the interquartile range.
[1]

Did this page help you?

3a
Sme Calculator
1 mark

The grouped frequency table shows information about the weekly wages of 80 factory workers.

Weekly wage(bold £ bold italic x) Frequency
100 less than x less-than or slanted equal to 200 8
200 less than x less-than or slanted equal to 300 15
300 less than x less-than or slanted equal to 400 30
400 less than x less-than or slanted equal to 500 17
500 less than x less-than or slanted equal to 600 7
600 less than x less-than or slanted equal to 700 3

Complete the cumulative frequency table.

Weekly wage(bold £ bold italic x) Cumulative frequency
100 less than x less-than or slanted equal to 200  
100 less than x less-than or slanted equal to 300  
100 less than x less-than or slanted equal to 400  
100 less than x less-than or slanted equal to 500  
100 less than x less-than or slanted equal to 600  
100 less than x less-than or slanted equal to 700  
3b
Sme Calculator
2 marks

On the grid opposite, draw a cumulative frequency graph for your table.

q9b-medium-6-4-cumulative-frequency-edexcel-gcse-maths

3c
Sme Calculator
2 marks

Use your graph to find an estimate for the interquartile range.

3d
Sme Calculator
2 marks

Use your graph to find an estimate for the number of workers with a weekly wage of more than £530.

Did this page help you?

4a
Sme Calculator
1 mark

The table shows information about the times taken by 100 people in a fun run.

Time ( bold italic t minutes) Frequency
20 less than t less-than or slanted equal to 30 4
30 less than t less-than or slanted equal to 40 16
40 less than t less-than or slanted equal to 50 36
50 less than t less-than or slanted equal to 60 24
60 less than t less-than or slanted equal to 70 14
70 less than t less-than or slanted equal to 80 6

Complete the cumulative frequency table for this information.

Time ( bold italic t minutes) Cumulative frequency
20 less than t less-than or slanted equal to 30  
20 less than t less-than or slanted equal to 40  
20 less than t less-than or slanted equal to 50  
20 less than t less-than or slanted equal to 60  
20 less than t less-than or slanted equal to 70  
20 less than t less-than or slanted equal to 80  
4b
Sme Calculator
2 marks

On the grid, draw a cumulative frequency graph for your table.

q10b-medium-6-4-cumulative-frequency-edexcel-gcse-maths

4c
Sme Calculator
1 mark

Use your graph to find an estimate for the median time.

4d
Sme Calculator
2 marks

Use your graph to find an estimate for the number of people who took longer than space 63 spaceminutes.

Did this page help you?

5a
Sme Calculator
1 mark

The cumulative frequency graph shows information about the weights of 60 potatoes.

q11a-medium-6-4-cumulative-frequency-edexcel-gcse-maths

Use the graph to find an estimate for the median weight.

5b
Sme Calculator
1 mark

Jamil says,
   "80 - 40 = 40 so the range of the weights is 40 g."

Is Jamil correct?
You must give a reason for your answer.

5c
Sme Calculator
2 marks

Show that less than 25% of the potatoes have a weight greater than 65 g.

Did this page help you?

6a
Sme Calculator
2 marks

The cumulative frequency table shows the marks some students got in a test.

Mark (bold italic m) Cumulative frequency
0 less than m less-than or slanted equal to 10 8
0 less than m less-than or slanted equal to 20 23
0 less than m less-than or slanted equal to 30 48
0 less than m less-than or slanted equal to 40 65
0 less than m less-than or slanted equal to 50 74
0 less than m less-than or slanted equal to 60 80

On the grid, plot a cumulative frequency graph for this information.

q12a-medium-6-4-cumulative-frequency-edexcel-gcse-maths
6b
Sme Calculator
1 mark

Find the median mark.

6c
Sme Calculator
3 marks

Students either pass the test or fail the test.
The pass mark is set so that 3 times as many students fail the test as pass the test.

Find an estimate for the lowest possible pass mark.

Did this page help you?

7a
Sme Calculator
1 mark

The table gives information about the times, in minutes, taken by 80 customers to do their shopping in a supermarket.

Time taken (t minutes) Frequency
0 less than t less-than or slanted equal to 10 7
10 less than t less-than or slanted equal to 20 26
20 less than t less-than or slanted equal to 30 24
30 less than t less-than or slanted equal to 40 14
40 less than t less-than or slanted equal to 50 7
50 less than t less-than or slanted equal to 60 2

Complete the cumulative frequency table.

Time taken (t minutes) Cumulative frequency
0 less than t less-than or slanted equal to 10  
0 less than t less-than or slanted equal to 20  
0 less than t less-than or slanted equal to 30  
0 less than t less-than or slanted equal to 40  
0 less than t less-than or slanted equal to 50  
0 less than t less-than or slanted equal to 60  

7b
Sme Calculator
2 marks

On the grid, draw a cumulative frequency graph for your table.

q12-january-2022-1h-edexcel-igcse-maths

7c
Sme Calculator
1 mark

Use your graph to find an estimate for the median time taken.


.................................... minutes 

7d
Sme Calculator
2 marks

One of the 80 customers is chosen at random.

Use your graph to find an estimate for the probability that the time taken by this customer was more than 42 minutes.

Did this page help you?

8a
Sme Calculator
2 marks

The cumulative frequency graph gives information about the weights, in grams, of 90 bags of sweets.

q11-4ma1-1h-qp-jan21-paper1-igcse-maths

Find an estimate for the median of the weights of these bags of sweets.

...................................................... grams 

8b
Sme Calculator
3 marks

Roberto sells the bags of sweets to raise money for charity.
Bags with a weight greater than d grams are labelled large bags and sold for 3.75 euros each bag.

The total amount of money he receives by selling all the large bags is 93.75 euros.

Find the value of d.

Did this page help you?

9a
Sme Calculator
1 mark

The manager of a call centre asked the 120 people, who rang the call centre last week, how long they each waited before their call was answered.

The table gives information about their replies.

Time waited (t minutes) Frequency
0 space less than space t space less-than or slanted equal to space 5 8
5 space less than space t space less-than or slanted equal to space 10 15
10 space less than space t space less-than or slanted equal to space 15 17
15 space less than space t space less-than or slanted equal to space 20 28
20 space less than space t space less-than or slanted equal to space 25 33
25 space less than space t space less-than or slanted equal to space 30 19


Complete the cumulative frequency table.

Time waited (t minutes) Cumulative Frequency
0 space less than space t space less-than or slanted equal to space 5  
0 space less than space t space less-than or slanted equal to space 10  
0 space less than space t space less-than or slanted equal to space 15  
0 space less than space t space less-than or slanted equal to space 20  
0 space less than space t space less-than or slanted equal to space 25  
0 space less than space t space less-than or slanted equal to space 30  

9b
Sme Calculator
2 marks

On the grid, draw a cumulative frequency graph for your table.

q11b-4ma1-1hr-qp-jan21-paper1-igcse-maths

9c
Sme Calculator
1 mark

Use your graph to find an estimate for the median of the times waited.

...................................................... minutes 

9d
Sme Calculator
2 marks

Using your graph, find an estimate for the percentage of the 120 people who said that they waited longer than 23 minutes before their call was answered.
Show your working clearly.

......................................................% 

Did this page help you?

10a
Sme Calculator
1 mark

The table gives information about the times taken by 90 runners to complete a 10 km race.

Time (t minutes) Frequency
25 space less than space t space less-than or slanted equal to space 35 12
35 space less than space t space less-than or slanted equal to space 45 24
45 space less than space t space less-than or slanted equal to space 55 28
55 space less than space t space less-than or slanted equal to space 65 12
65 space less than space t space less-than or slanted equal to space 75 10
75 space less than space t space less-than or slanted equal to space 85 4

Complete the cumulative frequency table.

Time (t minutes) Cumulative frequency
25 space less than space t space less-than or slanted equal to space 35 12
25 space less than space t space less-than or slanted equal to space 45  
25 space less than space t space less-than or slanted equal to space 55  
25 space less than space t space less-than or slanted equal to space 65  
25 space less than space t space less-than or slanted equal to space 75  
25 space less than space t space less-than or slanted equal to space 85  

10b
Sme Calculator
2 marks

On the grid below, draw a cumulative frequency graph for your table.

q11b-4ma1-1h-qp-nov21-paper1-igcse-maths

10c
Sme Calculator
2 marks

Any runner who completed the race in a time T minutes such that 42 space less than space T space less-than or slanted equal to space 52 minutes was awarded a silver medal.

Use your graph to find an estimate for the number of runners who were awarded a silver medal.

....................................................... runners 

Did this page help you?

1a
Sme Calculator
2 marks

The cumulative frequency graphs show information about the times taken by 100 male runners and by 100 female runners to finish the London marathon. 

q6-hrd-6-4-cumulative-frequency-edexcel-gcse-maths

A male runner is chosen at random.

Find an estimate for the probability that this runner took less than 4 hours to finish the London marathon.

1b
Sme Calculator
4 marks

Use medians and interquartile ranges to compare the distribution of the times taken by the male runners with the distribution of the times taken by the female runners.

Did this page help you?

2
Sme Calculator
3 marks

A group of 60 students each sat an algebra test and a geometry test.
Each test was marked out of 110

The cumulative frequency graph gives information about the marks gained by the 60 students in the algebra test.

q14-4ma1-2hr-qp-jan22-paper2-igcse-maths

To be awarded a grade A in the algebra test, a student had to gain a mark greater than 64

Two students are to be selected at random from the 60 students in the group.

Use the graph to find an estimate for the probability that both of these students were awarded a grade A in the algebra test.

Did this page help you?

3
Sme Calculator
3 marks

The cumulative frequency graph gives information about the weights, in grams, of 90 bags of sweets.

q11-4ma1-1h-qp-jan21-paper1-igcse-maths

Roberto sells the bags of sweets to raise money for charity.
Bags with a weight greater than d grams are labelled large bags and sold for 3.75 euros each bag.

The total amount of money he receives by selling all the large bags is 93.75 euros.

Find the value of d.

Did this page help you?

4
Sme Calculator
3 marks

A total of 80 national and international runners took part in a race.
The cumulative frequency graph gives information about the times, in minutes, they took for the race.

q12-4ma1-1h-qp-jan20-paper1-igcse-maths

60% of the national runners took 50 minutes or less for the race.
No international runner took 50 minutes or less for the race.

Work out an estimate for the number of national runners who took part in the race.

Did this page help you?

5
Sme Calculator
3 marks

The cumulative frequency graph shows information about the length, in minutes, of each of 80 films.

q10-paper1h-june2018-edexcel-igcse-maths

Clare says,

“More than 35% of these films are over 120 minutes long.”

Is Clare correct?
Give a reason for your answer.

Did this page help you?

6a
Sme Calculator
1 mark

A group of 60 students each sat an algebra test and a geometry test.
Each test was marked out of 110

The cumulative frequency graph gives information about the marks gained by the 60 students in the algebra test.

q14-4ma1-2hr-qp-jan22-paper2-igcse-maths

Use the graph to find an estimate for the median mark in the algebra test.

6b
Sme Calculator
1 mark

Use the graph to find an estimate for the number of students who gained 58 marks or less in the algebra test.

6c
Sme Calculator
2 marks

Use the graph to find an estimate for the interquartile range of the marks gained in the algebra test.

6d
Sme Calculator
1 mark

The interquartile range of the marks gained in the geometry test is 9

Luis says

“The students’ marks are more spread out in the algebra test than in the
geometry test.”

Is Luis correct?
Give a reason for your answer.

6e
Sme Calculator
3 marks

To be awarded a grade A in the algebra test, a student had to gain a mark greater than 64

Two students are to be selected at random from the 60 students in the group.

Use the graph to find an estimate for the probability that both of these students were awarded a grade A in the algebra test.

Did this page help you?

7a
Sme Calculator
2 marks

The cumulative frequency table gives information about the distance, in kilometres, that each of 80 workers travel from home to work at Office A.

Distance travelled (d km) Cumulative frequency
0 space less than space d space less-than or slanted equal to space 5 17
0 space less than space d space less-than or slanted equal to 10 32
0 space less than space d space less-than or slanted equal to space 15 57
0 space less than space d space less-than or slanted equal to space 20 70
0 space less than space d space less-than or slanted equal to space 25 76
0 space less than space d space less-than or slanted equal to space 30 80


On the grid below, draw a cumulative frequency graph for the information in the table.

q12a-4ma1-2h-qp-june21-paper2-igcse-maths

7b
Sme Calculator
1 mark

Use your graph to find an estimate for the median distance travelled.

....................................................... km 

7c
Sme Calculator
2 marks

Use your graph to find an estimate for the interquartile range of the distances travelled.

....................................................... km 

7d
Sme Calculator
2 marks

For Office B, the median distance workers travel from home to work is 15 km and the interquartile range is 5 km.

Use the information above to compare the distances that workers at Office A and workers at Office B travel from home to work.
Write down two comparisons.

Did this page help you?

8a
Sme Calculator
1 mark

The cumulative frequency graph gives information about the waiting times, in minutes, of people with appointments at Hospital A.

q12-4ma1-1hr-qp-jan20-paper1-igcse-maths

Use the graph to find an estimate of the median waiting time at Hospital A.


.........................minutes
8b
Sme Calculator
2 marks
Use the graph to find an estimate of the interquartile range of the waiting times at Hospital A.


............................... minutes
8c
Sme Calculator
2 marks

At a different hospital, Hospital B, the median waiting time is 28 minutes and the interquartile range of the waiting times is 19 minutes.

Compare the waiting times at Hospital A with the waiting times at Hospital B.

Did this page help you?

9a
Sme Calculator
2 marks

The cumulative frequency graph shows information about the length, in minutes, of each of 80 films.

q10-paper1h-june2018-edexcel-igcse-maths

Use the graph to find an estimate for the interquartile range.

....................................................... minutes 

9b
Sme Calculator
3 marks

Clare says,

“More than 35% of these films are over 120 minutes long.”

Is Clare correct?
Give a reason for your answer.

Did this page help you?

10a
Sme Calculator
1 mark

The cumulative frequency graph shows information about the masses of 200 apples.

q17-paper-2h-nov-2020-aqa-gcse-maths

Estimate the median mass.

................................grams 

10b
Sme Calculator
3 marks

Apples with mass 90 grams or less cost 32p each.

Apples with mass more than 90 grams cost 39p each.
Estimate the total cost of the 200 apples.

£...................................

Did this page help you?

11a
Sme Calculator
3 marks

Here is some information about the miles per gallon of 60 cars.

Miles per gallon, bold italic x Frequency      
40 space less than space x space less-than or slanted equal to space 50 6      
50 space less than space x space less-than or slanted equal to space 60 16      
60 space less than space x space less-than or slanted equal to space 70 28      
70 space less than space x space less-than or slanted equal to space 80 10      

Draw a cumulative frequency graph.

q22a-paper1h-nov2017-aqa-gcse-maths

11b
Sme Calculator
2 marks

Use the graph to work out the interquartile range.

...........................miles per gallon

Did this page help you?

12a
Sme Calculator
3 marks

Here is some information about the marks of 60 students in a test.

Mark, Frequency      
  9      
50 space less than space m space less-than or slanted equal to space 60 16      
60 space less than space m space less-than or slanted equal to space 70 20      
70 space less than space m space less-than or slanted equal to space 80 8      
80 space less than space m space less-than or slanted equal to space 90 7      


On the grid, draw a cumulative frequency graph.

q19a-paper1h-june2017-aqa-gcse-maths

12b
Sme Calculator
2 marks

Use your graph to estimate the lowest mark of the top 20% of students.

Did this page help you?

13a
Sme Calculator
1 mark

The cumulative frequency graph summarises the annual salary, p (£ thousands), of the 60 workers in a factory.

q12-paper4-nov2019-ocr-gcse-maths

Use the graph to estimate the median annual salary.

£ ...................................... thousands 

13b
Sme Calculator
2 marks

Complete this cumulative frequency table.

Annual salary, p
(£ thousands)
Cumulative
frequency
p space less-than or slanted equal to space 10  
p space less-than or slanted equal to space 20  
p space less-than or slanted equal to space 30  
p space less-than or slanted equal to space 50  
p space less-than or slanted equal to space 80  

13c
Sme Calculator
5 marks

Use the information in the cumulative frequency table to calculate an estimate of the mean annual salary.

£ ...................................... thousands 

13d
Sme Calculator
1 mark

Explain why your estimate of the median is more reliable than your estimate of the mean.

Did this page help you?

14
Sme Calculator
3 marks

The cumulative frequency graph shows the distribution of the heights of members of a rowing club.

q13a-paper4-june2019-ocr-gcse-maths

Calculate the percentage of the members who are at least 180 cm tall.

Did this page help you?

15
Sme Calculator
3 marks

The cumulative frequency graph shows information about the marks scored by a group of 80 students in a test.

q15-paper5-nov2018-ocr-gcse-maths

The ratio of the number of students passing the test compared to failing the test is 4 : 1.
Find the minimum mark needed to pass the test.

Did this page help you?

16a
Sme Calculator
3 marks

Iqrah carries out a survey of 200 families in the north of England on their weekly spending on food.

The cumulative frequency diagram summarises the results.

q15-paper5-nov2017-ocr-gcse-maths

Find

i)
the median,

£ ................. [1]

ii)
the interquartile range.

£ ................. [2]

16b
Sme Calculator
2 marks

Iqrah says

   15% of these families spent over £120.

Is her statement correct?
State the evidence you have used in making your decision.

16c
Sme Calculator
4 marks

In a survey of 200 families in the south of England, the median weekly amount spent on food was £84 and the interquartile range was £28.

Make two comparisons between the weekly amounts spent on food in the north of England and the south of England.
State the evidence you have used in making your comparisons.

1 .................... 

2 .................... 

Did this page help you?