Finding Z - Score

Front

What is a z-score?

Back

A z-score indicates how many standard deviations an element is from the mean of a data set.

Front

What is the formula for calculating a z-score?

Back

Front

What does a positive z-score indicate?

Back

A positive z-score indicates that the value is above the mean.

Front

What does a negative z-score indicate?

Back

A negative z-score indicates that the value is below the mean.

Front

How do you find the z-score for a given value?

Back

Front

If the mean is 38 and the standard deviation is 1.2, what is the z-score for x = 42?

Back

The z-score is 3.33.

Front

If the mean is 22 and the standard deviation is 3.1, what is the z-score for x = 29?

Back

The z-score is 2.26.

Front

If the mean is 22.8 and the standard deviation is 7, what is the z-score for x = 20?

Back

The z-score is -0.4.

Front

If the mean is 45 and the standard deviation is 2.1, what is the z-score for x = 50?

Back

The z-score is 2.38.

Tags

CCSS.HSS.ID.A.4

Front

What is the significance of a z-score of 0?

Back

A z-score of 0 indicates that the value is exactly at the mean.