5. In the following group frequency distribution, find the variance and standard deviation. Remember to use your shortcut formulas on your green formula sheet you received with your textbook. Ages (in years) of Best Actor when an Oscar was won. - 87 male actors, who won an Oscar, were selected and this grouped frequency table was obtained reflecting the age at which the Oscar was won for the particular sample. (Note - Extra columns in the table for your use.) Age (years) Frequency when Oscar was won 20 -29 1 30-39 28 40-49 36 50-59 15 60-69 6. 70-79 1 n = 87

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