## Answers

the first 10 prime no. are

2 3 5 7 11 13 17 19 23 29

mean=2+3+5+7+11+13+17+19+23+29/10

=12.9

sum of these numbers are 2+3+5+7+11+13+17+19+23+29 = 129

therefore, mean = sum of observation / no. of observation

= 129/10 = 12.9

the first 10 prime no. are

2 3 5 7 11 13 17 19 23 29

mean=2+3+5+7+11+13+17+19+23+29/10

=12.9

sum of these numbers are 2+3+5+7+11+13+17+19+23+29 = 129

therefore, mean = sum of observation / no. of observation

= 129/10 = 12.9

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