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Back to 2.7 Measures of the Spread of the Data

2.7 Exercise 11

Avg difficulty 2.5


Find the standard deviation for the following frequency tables using the formula. Check the calculations with the TI 83/84.

Find the standard deviation for the following frequency tables using the formula. Check the calculations with the TI 83/84.

  1. GradeFrequency
    49.5–59.52
    59.5–69.53
    69.5–79.58
    79.5–89.512
    89.5–99.55
  2. Daily Low Temperature Frequency
    49.5–59.5 53
    59.5–69.5 32
    69.5–79.5 15
    79.5–89.5 1
    89.5–99.5 0
  3. Points per Game Frequency
    49.5–59.5 14
    59.5–69.5 32
    69.5–79.5 15
    79.5–89.5 23
    89.5–99.5 2

OpenStax Introductory Statistics 2e, 2.7 Measures of the Spread of the Data, exercise 11

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Adapted from Introductory Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Statistics 2e. Imported at revision 50ec917.