Explanation Given Information: The provided table are, Interval Midpoint ( x ) Frequency ( f ) 6.5 − 9.5 8 3 9.5 − 12.5 11 10 12.5 − 15.5 14 4 15.5 − 18.5 17 9 18.5 − 21.5 20 15 21.5 − 24.5 23 28 24.5 − 27.5 26 3 27.5 − 30.5 29 2 Formula used: The mean of the frequency distribution is computed as: x ¯ = sum of x f sum of f Calculation: Consider the following data: Interval Midpoint ( x ) Frequency ( f ) 6.5 − 9.5 8 3 9.5 − 12.5 11 10 12.5 − 15.5 14 4 15.5 − 18.5 17 9 18.5 − 21.5 20 15 21.5 − 24.5 23 28 24.5 − 27.5 26 3 27.5 − 30.5 29 2 Compute the mean using the formula x ¯ = sum of x f sum of f as follows: Compute the value of xf as follows: Interval Midpoint ( x ) Frequency ( f ) xf 6

12th Edition

ISBN: 9781337630580

Author: Dale Ewen

Publisher: Cengage Learning

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Chapter 15, Problem 13R

To determine

To calculate: The mean from the following frequency distribution:

Interval

Midpoint

(x)

Frequency (f)

6.5−9.5

8

3

9.5−12.5

11

10

12.5−15.5

14

4

15.5−18.5

17

9

18.5−21.5

20

15

21.5−24.5

23

28

24.5−27.5

26

3

27.5−30.5

29

2

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Chapter 15, Problem 12R

Chapter 15, Problem 14R

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Chapter 15 Solutions

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The mean from the following frequency distribution: Interval Midpoint ( x ) Frequency ( f ) 6.5 − 9.5 8 3 9.5 − 12.5 11 10 12.5 − 15.5 14 4 15.5 − 18.5 17 9 18.5 − 21.5 20 15 21.5 − 24.5 23 28 24.5 − 27.5 26 3 27.5 − 30.5 29 2

Solution Summary: The author calculates the mean of the frequency distribution from the following data: Interval Midpoint (x) Frequency (f).

Concept explainers

Videos

To calculate: The mean from the following frequency distribution:

Interval

Midpoint

(x)

Frequency (f)

6.5−9.5

8

3

9.5−12.5

11

10

12.5−15.5

14

4

15.5−18.5

17

9

18.5−21.5

20

15

21.5−24.5

23

28

24.5−27.5

26

3

27.5−30.5

29

2

Want to see the full answer?

Chapter 15 Solutions

Interval	Midpoint (x)	Frequency (f)
6.5−9.5	8	3
9.5−12.5	11	10
12.5−15.5	14	4
15.5−18.5	17	9
18.5−21.5	20	15
21.5−24.5	23	28
24.5−27.5	26	3
27.5−30.5	29	2

The mean from the following frequency distribution: Interval Midpoint ( x ) Frequency ( f ) 6.5 − 9.5 8 3 9.5 − 12.5 11 10 12.5 − 15.5 14 4 15.5 − 18.5 17 9 18.5 − 21.5 20 15 21.5 − 24.5 23 28 24.5 − 27.5 26 3 27.5 − 30.5 29 2

Solution Summary: The author calculates the mean of the frequency distribution from the following data: Interval Midpoint (x) Frequency (f).

Concept explainers

Videos

To calculate: The mean from the following frequency distribution: Interval Midpoint (x) Frequency (f) 6.5−9.5 8 3 9.5−12.5 11 10 12.5−15.5 14 4 15.5−18.5 17 9 18.5−21.5 20 15 21.5−24.5 23 28 24.5−27.5 26 3 27.5−30.5 29 2

Want to see the full answer?

Chapter 15 Solutions

To calculate: The mean from the following frequency distribution:

Interval

Midpoint

(x)

Frequency (f)

6.5−9.5

8

3

9.5−12.5

11

10

12.5−15.5

14

4

15.5−18.5

17

9

18.5−21.5

20

15

21.5−24.5

23

28

24.5−27.5

26

3

27.5−30.5

29

2