Question 1

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Computers

Use the frequency distribution to construct a probability distribution.

The number of computers per household in a small town.

Computers
0 1 2 3
Households 94 119 84 69

 

  1. x P open parentheses x close parentheses
    0
    1
    2
    3
  2. Find the mean to 3 significant digits.
    mu equals 

  3. Find the variance to 3 significant digits.
    sigma squared equals 

  4. Find the standard deviation to 3 significant digits.
    sigma equals 

 

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