Question

The marks of 10 students of a class are given below. Find the mean marks:
15, 17, 20, 25, 21, 20, 14, 8, 19, 21.​

Answer 1

if you will mark me as brain list then I will answer your question

Answer 2

the formula of mean is sum of term

no. of term

= 15+17+20+25+21+20+14+8+19+21÷ 10

=180÷10

=18