Question

Question 5 Given a mean of 21 and a standard deviation of 1.2, what is the Z-score of a data value x = 21? Use the following equation: X-mean Zscore -1.0 0 OOOO 1.0 21 I don't know

Answer 1

The value of the z-score for x = 21 is 0

Here, we want to find the value of the z-score

We use the following formula;

In this case, x = 21, mean = 21 and SD = 1.2

Substituting these values, we have that;

`z-\text{score = }(21-21)/(1.2)\text{ = }(0)/(1.2)\text{ = 0}`