Spread of a data set - standard deviation & variance

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Examples
Lessons
  1. Determining Population Standard Deviation VS. Sample Standard Deviation
    The heights of students (in cm) in a class are: {148, 156, 160, 164, 164, 167, 171, 176, 180, 194}
    1. Calculate the Population Standard Deviation and Variance.
    2. Randomly pick 3 data values and calculate the Sample Standard Deviation.
    3. Verify the results using statistics commands on your calculator.
  2. Determining the Standard Deviations from Histograms
    Without calculation, determine which set of data is likely to have:
    • the greatest standard deviation
    • the smallest standard deviation

    Spread of a data set - standard deviation & variance

    1. Determining the Mean and the Standard Deviation from a Frequency Table
      Determine the mean and the standard deviation for the population of scores in the following frequency table.

      score

      frequency

      4

      6

      5

      3

      7

      8

      9

      2