Answers

2016-02-10T20:48:57+05:30
Mean=(2+3+5+7+11+13+17+19+23+29)/2
=129/2=64.5
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2016-02-10T20:51:11+05:30
A prime number is the number which have only two divisors which are one and itself.
First ten prime no 's = 2,3,5,7,11,13,17,19,23,29
Total number of observations = 10
Mean = Sum of all Observations / Total number of Observations
= (2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29) / 10
= 129 / 10 = 12.9
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