Explore BrainMass

Explore BrainMass

    Sample variance and sample standard deviation calculation

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

    #78. Consider a sample x1, x2, ..., xn and suppose that the values of x, s2, and s have been calculated.
    _
    a. Let yi = xi - x for i = 1, ..., n. How do the values of s2 and s for the yi's compare to the corresponding values for the xi's? Explain.
    _
    b. Let zi = (xi - x ) / s for i = 1, ..., n. What are the values of the sample variance and sample standard deviation for the zi's?

    Please see attached.

    © BrainMass Inc. brainmass.com June 3, 2020, 5:52 pm ad1c9bdddf
    https://brainmass.com/statistics/standard-deviation/sample-variance-sample-standard-deviation-calculation-40501

    Attachments

    $2.19

    ADVERTISEMENT