Explore BrainMass
Share

Explore BrainMass

    Finding the mean and standard deviation using frequency table

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    The score distribution shown in the table is for all students who took a yearly AP stats exam.

    Score Percent of Students
    5 12.4
    2 21.7
    3 25.4
    2 18.4
    1 22.1

    Find the mean AND standard deviation:

    © BrainMass Inc. brainmass.com October 10, 2019, 7:43 am ad1c9bdddf
    https://brainmass.com/math/probability/mean-standard-deviation-frequency-table-592424

    Solution Preview

    E(x) = Mean = [ 5*(0.124) + 4*(0.217)+3*(0.254)+2*(0.184)+1*(0.221) ...

    Solution Summary

    The solution gives detailed steps on finding the mean and standard deviation using a frequency table.

    $2.19