To find the z score, we use the formula:
z = (x - μ) / σ
where x is the score, μ is the mean, and σ is the standard deviation.
For a student with a grade of 68:
z = (68 - 71) / 10
z = -0.3
The z score is -0.3.
For a student with a grade of 80:
z = (80 - 71) / 10
z = 0.9
The z score is 0.9.
The average score of a statistics class was 71 with a standard deviation of 10.
What is the z score of a student with a grade of 68?
What is the z score of a student with a grade of 80?
1 answer
1 answer