How do I calculate the z-score for my data?
An example of an AI chatbot conversation about calculating z-scores for data analysis.
How do I calculate the z-score for my data?
To calculate the z-score, you subtract the mean from your data point and then divide by the standard deviation.
Can you show me an example with numbers?
Sure! If your data point is 85, the mean is 70, and the standard deviation is 10, the z-score is (85-70)/10 = 1.5.
What does a z-score of 1.5 mean?
A z-score of 1.5 means your data point is 1.5 standard deviations above the mean.
How can I interpret negative z-scores?
Negative z-scores indicate that the data point is below the mean. For example, a z-score of -1 means it's 1 standard deviation below the mean.
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