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Homework Help: Stats observations help

  1. Aug 22, 2016 #1
    1. The problem statement, all variables and given/known data

    Given that r≥(n-1)/(k^2)

    a) Show that the proportion of observations for which |di | ≥ k cannot exceed 1/(k^2)

    b) For what values of k is this meaningful.

    3. The attempt at a solution




    (r/n)≥(n)/(n*k^2) -1/(n*k^2)

    1/(n*k^2)+(r/n) ≥ 1/(k^2)

    Is this the correct way to solve it?


    would k only be meaningful if it does not =0
  2. jcsd
  3. Aug 22, 2016 #2


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    2017 Award

    Staff: Mentor

    What are r,n,k,di?

    It is clearly not meaningful for k=0, yes. For other values, it would help to have the variables defined.
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