Answers

2016-02-16T12:03:15+05:30
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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2016-02-16T14:00:09+05:30
THE 1ST 10 PRIME MEMBERS ARE :
2,3,5,7,11,13,17,19,23,29
SO,
MEAN= (2+3+5+7+11+13+17+19+23+29)/10
           =129/10
           =12.9
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