Finding Z - Score

Front

What does the sign of a z-score indicate?

Back

The sign of the z-score indicates whether the location is above (positive) or below (negative) the mean.

Front

What is the formula for finding z-scores?

Back

Front

Calculate the z-score for x = 9.6, Mean = 25, Standard Deviation = 7.

Back

The z-score is -2.2.

Front

Calculate the z-score for x = 11, Mean = 27, Standard Deviation = 1.4.

Back

The z-score is -11.43.

Front

Calculate the z-score for x = 20, Mean = 22.8, Standard Deviation = 7.

Back

The z-score is -0.4.

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

If a z-score is 0, what does it signify?

Back

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

Front

How do you interpret a z-score of -2.2?

Back

A z-score of -2.2 indicates that the value is 2.2 standard deviations below the mean.

Front

How do you interpret a z-score of 1.5?

Back

A z-score of 1.5 indicates that the value is 1.5 standard deviations above the mean.