Question

The mean of a set of data is -3.82 and its standard deviation is 2.31. Find the z score for a value of 3.99.

Answer 1

The z- score for a value of 3.99 will be 3.38.

Explanation:

It is given that the mean of a set of data is -3.82 and its standard deviation is 2.31.

Thus, the value of the z-score=
`(value-mean)/(standarddeviation)`

=
`(3.99-(-3.82))/(2.31)`

=
`(3.99+3.82)/(2.31)`

=
`(7.81)/(2.31)`

=
`3.38`

Thus, the z- score for a value of 3.99 will be 3.38.