Question

the mean of a set of data is 2.94 and its standard deviation is 2.81. find the z score for a value of 6.88.

Answer 1

1.40

Explanation:

z = (X - υ) / σ

where X is test statistic, υ is mean and σ is standard deviation.

z = (6.88 - 2.94) / 2.81

= 1.40