Find the mean of the first six prime numbers.

(i) Find the mean of the first six prime numbers.
(ii) Find the mean of the first seven odd prime numbers.

Solution:

(i) First 6 prime numbers are 2, 3, 5, 7, 11, 13

Here, n = 6
∴ Mean (x̄) = Ʃ x_i/n
= (2 + 3 + 5 + 7 + 11 + 13)/6
= 41/6
Hence, the mean of the first six prime numbers is 41/6.

(ii) First seven odd prime numbers are 3, 5, 7, 11, 13, 17, 19

Here, n = 7
∴ Mean (x̄) = Ʃ x_i/n
= (3 + 5 + 7 + 11 + 13 + 17 + 19)/7
= 75/7
Hence, the mean of the first six prime numbers is 75/7.

More Solutions:

• If the median the data is 13, find the value of x
• State which of the following variables are continuous.
• Given below are the marks obtained by 27 students in a test:
• Explain the meaning of the following terms :
• The number of observations in a particular class.
• The marks obtained (out of 50) by 40 students in a test.
• Use the adjoining table to find:
• The marks of 200 students in a test were recorded.
• Given below are the marks secured by 35 students in a test: