Question

The number of wins for the 2007 regular season of the 30 MLB teams are listed below.95 94 83 69 66 96 88 79 72 69 94 88 76 76 89 88 84 73 71 85 83 78 73 72 68 90 90 89 82 71.We want to build a frequency distribution with 7 classes with the same width. Answer the following questions:1.) What is the class width?a) 4 b) 5 c) 3 d) 6 e) 22.) The midpoint of the first class isa) 67 b) 67.5 c) 68.5 d) 68 e) 703.) When drawing a histogram, how many class boundaries are needed?a) 9 b) 4 c) 7 d) 8 e) 6

Answer 1

Explanation:

Given are the number of wins for the 2007 regular season of the 30 MLB teams

We have to build a frequency distribution with 7 classes with the same width.

`Maximum = 96 and minimum =66:  Range - 96-66 =30`

For 7 classes, we can have class width as 66-70,71-75,....96-100. Hence

Class width= 5 (option b)

The mid point of the first class = 68 Option d

Class boundaries = 65.5,70.5...100.5 hence 8 Option d