Question

A sample with a mean of M = 8 has EX = 56. How many scores are in the sample?
The number of scores is n =

Answer 1

Answer:

$n = 7$

Step-by-step explanation:

Given

$\bar x = 8$ --- the mean

$\sum x = 56$ --- sum of scores

Required

The number of scores (n)

This is calculated as:

$\bar x = \frac{\sum x}{n}$

Make n the subject

$n = \frac{\sum x}{\bar x}$

$n = \frac{56}{8}$

$n = 7$