How to Calculate Median, Mode, Mean, Variance, and ...

Mean . and . Median . Measuring spread: Quartile, Standard Deviation . and. Variance. Although graphs give an overall sense of the data, numerical summaries of features of the data make more precise the notions of center and spread. Measuring center . Two important measures of center are the . mean. and the . median. The mean . One measure of ... ................
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