Question

2. Suppose a student finds out that her score on her math test was z = +1.3. How would you explain this score to the student?

Answer 1

Solution:

We are given that a student finds out that her score on her math test was z = +1.3 .

z score gives the amount of standard deviation a score away from the mean.

If z score is negative then a score is below the mean.

if z score = 0, then a score is equal to mean.

if z score is positive , then a score above the mean.

We have z = +1.3 which is positive.

Thus students score is 1.3 standard deviation above mean value.