Question

the mean of a set of data is 5.73 and its standard deviation is 3.44. find the z score for a value of 13.87

Answer 1

z-score = 2.366

Explanation:

Given: mean of a set of data is u = 5.73

standard deviation s = 3.44

value or score x= 13.87

To find : z-score

Formula used: Z= (score - mean)/ standard deviation

Solution: Z= (x-u) / s

Z= (13.87 - 5.73) / 3.44

Z=8.14 / 3.44

Z= 2.366