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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

Respuesta :

Answer:

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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