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Trying to understand standard deviation. If a data set of 30 observations has a mean of 3.5 and a SD of 1.23. What is the SD telling me about the data?
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Trying to understand standard deviation. If a data set of 30 observations has a mean of 3.5 and a SD of 1.23. What is the SD telling me about the data?

User Soolie
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The standard deviation is the average amount of variability in your data set. It tells you, on average, how far each score lies from the mean.

User Ameer Sheikh
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