Every week an orangutan sanctuary measures the weight of each of its orangutans.
The weights, to the nearest kg, of ALL their 18 adult males are listed below:
52, 57, 63, 80, 56, 66, 101, 68, 55, 96, 70, 62, 66, 64, 99, 91, 55, 92
Using a convenience sample of size six, calculate the mean weight of the male orangutans from the data set above.
Starting from the third data value, take a systematic sample of size six and
re-calculate the mean weight of the male orangutans from the data set above.
Compare your results from parts (a) and (b) and state, with a reason, which sampling method is more reliable.
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