To calculate a z score, you subtract ______.
A)the mean from the raw score and divide this difference by the standard deviation
B)the mean from the raw score and divide this difference by the variance
C)the raw score from the mean and divide this difference by the standard deviation
D)the raw score from the mean and divide this difference by the variance

Question

Quizplus · Accepted Answer

To calculate a z score, you need to standardize the raw score by subtracting the mean from it and dividing this difference by the standard deviation. This creates a standard unit of measurement that can be used to compare scores from different distributions. Option B is incorrect because you divide the difference by the variance, which is not necessary to calculate a z score. Option C is incorrect because you need to subtract the mean from the raw score, not the other way around. Option D is also incorrect because you divide by the variance instead of the standard deviation.

To Calculate a Z Score, You Subtract ______