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
1
= 129 / 10 = 12.9
Hope it helps... :)
Find the mean of: (i) First eight natural numbers
(ii) First ten odd numbers
(iii) First five prime numbers
(iv) First six even numbers
(v) First seven multiples of 5.
(vi) Factors of 20
(vii) All prime numbers between 50 and 80