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2 cards from this section. Quick, good the night before a test.
Define what standard deviation indicates in a data set.
Think about whether values are close together or scattered.
Why can't the standard deviation be negative?
Is distance ever negative?
What does a standard deviation of zero indicate?
Consider how spread or close the values are.
True or False? A higher standard deviation means greater consistency.
Think about what consistency means in relation to numbers.
Given the data points [3, 17, 7, 12], calculate the standard deviation. Analyze what this means about data variability.
Start with calculating the mean and then find squared deviations.
If a company's quarterly earnings have a standard deviation of $100, what might that imply about earnings consistency?
What do consistent earnings look like?
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