Which of the following are true about the Z-score? Two answers correct. All or nothing credit. 1.  It provides a sense of how far an observation is from the mean in relative to the standard deviation. 2.  An observation is generally considered an outlier if its Z-score is more than 3 or less than -3. 3.  The Z-score measures where the observations in a data set are scattered around. 4.  A Z-score of -1 tells us that the average value of the data set is one standard deviations below the mean.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
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Which of the following are true about the Z-score?

Two answers correct. All or nothing credit.

1. 
It provides a sense of how far an observation is from the mean in relative to the standard deviation.
2. 
An observation is generally considered an outlier if its Z-score is more than 3 or less than -3.
3. 
The Z-score measures where the observations in a data set are scattered around.
4. 
A Z-score of -1 tells us that the average value of the data set is one standard deviations below the mean.
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