Averages & Range (CIE IGCSE Maths: Extended)

Exam Questions

3 hours44 questions

1 mark

The mass, correct to the nearest kilogram, of each of 11 parcels is shown below.

24, 23, 23, 26, 25, 27, 18, 96, 16, 17, 32

Find the mode.

............................................... kg

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1 mark

Give a reason why the mean would be an unsuitable average to use.

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Time ( $t$ minutes)	$0 < t \leq 10$	$10 < t \leq 15$	$15 < t \leq 20$	$20 < t \leq 40$
Frequency	7	19	$16$	$8$

Time ( $t$ s)	$0 < t \leq 10$	$10 < t \leq 15$	$15 < t \leq 20$	$20 < t \leq 40$	$40 < t \leq 75$
Frequency	$9$	$18$	$22$	$30$	$21$

Amount ( $$ x$ )	$0 < x \leq 20$	$20 < x \leq 25$	$25 < x \leq 35$	$35 < x \leq 50$	$50 < x \leq 100$
Frequency	$21$	$16$	$6$	$10$	$7$

Mark	5	6	7	8	9	10
Frequency	8	5	11	7	5	4

Number of cinema visits	0	1	2	3	4	5	6	7
Frequency	5	5	6	6	7	3	6	2