Question

The following summarizes the number of fiction read last summers by a sample of 28 students.

Answer 1

SOLUTION:

The mean is given by the formula;

$\frac{\sum_^fx}{\sum_^x}$

We calculate this as;

$\frac{2(3)+3(10)+4(15)}{3+10+15}=3.4$

Therefore, the mean is 3.4