What is the Z-score method for detecting outliers?
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What is the Z-score method for detecting outliers?
The Z-score method identifies outliers by measuring how far a data point is from the mean in terms of standard deviations.
How do I calculate the Z-score for a data point?
To calculate the Z-score, subtract the mean from the data point and then divide by the standard deviation.
What Z-score value indicates an outlier?
Typically, a Z-score above 3 or below -3 is considered an outlier, but this can vary based on context.
Can you give me an example of using the Z-score method?
Sure! If you have a dataset with a mean of 50 and a standard deviation of 10, a data point of 80 would have a Z-score of 3.
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