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Relative Frequencies for Comparisons.Construct the

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 15BSC Chapter 2.2

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

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Problem 15BSC

Relative Frequencies for Comparisons. In Exercises 15 and 16, construct the relative frequencies and answer the given questions.

Oscar Winners Construct one table (similar to Table 2­9 on page 50) that includes relative frequencies based on the frequency distributions from Exercises 5 and 6, and then compare the ages of Oscar-­winning actresses and actors. Are there notable differences?

Step-by-Step Solution:

Answer :

Step 1 of 1 :

Given, the ages of Oscar-winning actresses and the frequency

Age when Oscar was won

Frequency

20-29

27

30-39

34

40-49

13

50-59

2

60-69

4

70-79

1

80-89

1

We have to find the relative frequency for comparison

The total frequency = 82

Relative frequency =

Example :

               Relative frequency =

                                               = 32.92

 

class width : the difference between the upper and lower class limit.

Example : 29-2

                  = 9

class midpoints : (lower class limit + upper class limit)/ 2 

Example : (20+29)/2

              = 24.5

 class boundaries :

Upper class boundary = Upper limit + ()  unit of measurement

Ex: 4.9 is the upper class limit and unit of measurement is 0.1

Therefore ,

Upper class boundary = 29 + ()  1

                                    = 4.95

Lower class boundary = Lower limit + ()  unit of measurement

Ex: 4.9 is the upper class limit and unit of measurement is 0.1

Therefore ,

Upper class boundary = 20 + ()  1

                                    = 3.05

Age when Oscar was won

Frequency

Relative frequency

Class width

Class midpoints

Class boundaries

20-29

27

32.92

9

24.5

(20.5 , 29.5)

30-39

34

41.46

9

34.5

(30.5 , 39.5)

40-49

13

15.85

9

44.5

(40.5 , 49.5)

50-59

2

2.43

9

54.5

(50.5 , 59.5)

60-69

4

4.88

9

64.5

(60.5 , 69.5)

70-79

1

1.22

9

74.5

(70.5 , 79.5)

Step 2 of 1

Chapter 2.2, Problem 15BSC is Solved
Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

Elementary Statistics was written by and is associated to the ISBN: 9780321836960. Since the solution to 15BSC from 2.2 chapter was answered, more than 500 students have viewed the full step-by-step answer. This full solution covers the following key subjects: class, frequency, Table, relative, Frequencies. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. The answer to “?Relative Frequencies for Comparisons. In Exercises 15 and 16, construct the relative frequencies and answer the given questions. Oscar Winners Construct one table (similar to Table 2­9 on page 50) that includes relative frequencies based on the frequency distributions from Exercises 5 and 6, and then compare the ages of Oscar-­winning actresses and actors. Are there notable differences?” is broken down into a number of easy to follow steps, and 58 words. The full step-by-step solution to problem: 15BSC from chapter: 2.2 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12.

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