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Question
Find the mean of first 10 prime numbers and first 10 composite numbers
Solution
First 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29
Mean = `"Sum of all data"/"Number of data"`
= `(2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29)/10`
= `129/10`
Mean = 12.9
Mean of first 10 prime numbers = 12.9
First 10 composite numbers are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18
Mean = `(4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18)/10`
= `112/10`
= 11.2
Mean of first 10 composite numbers = 11.2
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