Question

In: Statistics and Probability

Consider the following sets of sample data: A: 20,58920,589, 21,89921,899, 22,00022,000, 22,11222,112, 22,11322,113, 20,95520,955, 21,42321,423, 20,84520,845,...

Consider the following sets of sample data:

A:

20,58920,589, 21,89921,899, 22,00022,000, 22,11222,112, 22,11322,113, 20,95520,955, 21,42321,423, 20,84520,845, 21,68321,683, 21,71521,715, 21,31521,315, 22,13322,133, 20,10320,103, 20,18220,182

B:

2.912.91, 4.074.07, 3.803.80, 4.794.79, 3.653.65, 4.444.44, 3.383.38, 4.494.49, 3.733.73, 3.113.11, 3.103.10

Copy Data

Step 1 of 2 :  

For each of the above sets of sample data, calculate the coefficient of variation, CV. Round to one decimal place.

Solutions

Expert Solution

1.

The sample size is n=14. The provided sample data along with the data required to compute the sample mean and sample variance are shown in the table below:

A A2
20589 423906921
21899 479566201
22000 484000000
22112 488940544
22113 488984769
20955 439112025
21423 458944929
20845 434514025
21683 470152489
21715 471541225
21315 454329225
22133 489869689
20103 404130609
20182 407313124
Sum = 299067 6395305775

2.

The sample size is n=11. The provided sample data along with the data required to compute the sample mean and sample variance are shown in the table below:

B B2
2.91 8.4681
4.07 16.5649
3.80 14.44
4.79 22.9441
3.65 13.3225
4.44 19.7136
3.38 11.4244
4.49 20.1601
3.73 13.9129
3.11 9.6721
3.10 9.61
Sum = 41.47 160.233

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