Solved: In Find (a) the number of classes, (b) the class

Chapter 2, Problem 22E

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QUESTION:

Problem 22E

In Problems Find (a) the number of classes, (b) the class limits, and (c) the class width.

Earthquakes The following data represent the number of earthquakes worldwide in 2010 with magnitudes less than 9.0 (as of October 15, 2010).

Magnitude

Number

0-0.9

22

1.0-1.9

22

2.0-2.9

3201

3.0-3.9

3332

4.0-4.9

7276

5.0-5.9

1430

6.0-6.9

130

7.0-7.9

18

8.0-8.9

1

Questions & Answers

QUESTION:

Problem 22E

In Problems Find (a) the number of classes, (b) the class limits, and (c) the class width.

Earthquakes The following data represent the number of earthquakes worldwide in 2010 with magnitudes less than 9.0 (as of October 15, 2010).

Magnitude

Number

0-0.9

22

1.0-1.9

22

2.0-2.9

3201

3.0-3.9

3332

4.0-4.9

7276

5.0-5.9

1430

6.0-6.9

130

7.0-7.9

18

8.0-8.9

1

ANSWER:

Solution:

Step 1 of 4:

Here we are given with a frequency distribution.

We need to obtain the required values using this frequency distribution.

The given frequency distribution is

Magnitude

Number

0-0.9

22

1.0-1.9

22

2.0-2.9

3201

3.0-3.9

3332

4.0-4.9

7276

5.0-5.9

1430

6.0-6.9

130

7.0-7.9

18

8.0-8.9

1


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