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Chapter 2: Q. 2.11 (page 73)

Exam Scores. The exam scores for the students in an introductory statistics class are as follows.

88 82 89 70 85

63 100 86 67 39

90 96 76 34 81

64 75 84 89 96

a. Group these exam scores, using the classes 30-39,40-49,50-59, 60-69,70-79,80-89, and 90-100.

b. What are the widths of the classes?

c. If you wanted all the classes to have the same width, what classes would you use?

Short Answer

Expert verified

Ans:

Step by step solution

01

Step 1. Given information.

given,

88 82 89 70 85

63 100 86 67 39

90 96 76 34 81

64 75 84 89 96

02

Step 2. 

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