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4 cards from this section. Quick, good the night before a test.
Define variance in your own words.
Think about how data can be distributed around the average.
What does a low standard deviation indicate about a dataset?
Consider how spaced out or concentrated the data points are.
What does variance measure?
Remember how it relates to the average!
True or False: Standard deviation can be negative.
Think about what the terms mean.
Given a dataset of temperatures over a week: [30, 32, 35, 29, 31, 34, 33], calculate the variance and standard deviation, and interpret the results in terms of how stable the temperatures are.
Calculate the mean first to ease finding deviations.
Discuss the implications of high variance in the design of a control system for a mechanical device. Why is it critical to address this during PDE analysis?
Consider how variability affects performance.
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