Find the mean of first 7 prime numbers.

First 7 prime numbers are = 2, 3, 5, 7, 11, 13, 17

Mean = \(\frac{ sum \; of \;  observations }{ number \; of \; observations }\)

Mean = \(\frac{ 2 + 3 + 5 + 7 + 11 + 13 + 17 }{ 7 }\)

Mean = \(\frac{ 58 }{ 7 }\)

Mean = 8.28