Explore BrainMass
Share

Explore BrainMass

    Compute Standard Deviation from a frequency table

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

    X P(X=x)

    (5 @ .12)
    (6 @ .24)
    (8 @ .44)
    (10 @ .20)

    What is the standard deviation of X?

    © BrainMass Inc. brainmass.com October 9, 2019, 3:20 pm ad1c9bdddf
    https://brainmass.com/statistics/quantative-analysis-of-data/compute-standard-deviation-from-a-frequency-table-1833

    Solution Preview

    So, standard deviation is computed as follows...

    sqrt[E(x^2)-(Ex)^2]

    So to find E(x) (the mean) we ...

    Solution Summary

    A step-by-step solution shows the student how to calculate the standard deviation given a probability distribution.

    $2.19