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Common Core Standard HSS-ID.A.4 Questions

Use the mean and standard deviation of a data set to fit it to a normal distribution and to estimate population percentages. Recognize that there are data sets for which such a procedure is not appropriate. Use calculators, spreadsheets, and tables to estimate areas under the normal curve.

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Grade 11 Collecting and Interpreting Data CCSS: HSS-ID.A.4
Standard deviation is best described as....
  1. the difference between the number and the mean
  2. the sum of the differences between the numbers and the mean
  3. the square root of the sum of the differences between the numbers and the mean squared and divided by the number of terms
  4. the square root of the mean divided by the Z-Score times the sum of the numbers

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