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7 November, 20:05

A sample of 15 adults who live in a large urban area were asked to indicate the number of parking tickets that each had received over the last 5 years. The data are given below. Find the mean, variance and standard deviation of the sample

3, 0,1,2,2, 6, 1, 3, 0,1, 0, 2, 2, 5, 4

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  1. 7 November, 22:42
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    Mean = 2.13

    Var = 3.05

    Std dev = 1.75

    Step-by-step explanation:

    given that a sample of 15 adults who live in a large urban area were asked to indicate the number of parking tickets that each had received over the last 5 years.

    x x^2

    3 9

    0 0

    1 1

    2 4

    2 4

    6 36

    1 1

    3 9

    0 0

    1 1

    0 0

    2 4

    2 4

    5 25

    4 16

    sum 32 114

    Mean 2.133333333 7.6

    Variance 7.6-2.13^2

    3.048888889

    Std dev sqrt of var

    1.74610678

    Mean = 2.13

    Var = 3.05

    Std dev = 1.75
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