Solved: Finding the Mean of a Frequency Distribution In

Chapter 2, Problem 51E

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QUESTION:

Problem 51E

Finding the Mean of a Frequency Distribution In Exercise, approximate the mean of the frequency distribution

Ages The ages of the residents of Medicine Lake, Montana, in 2010 (Source: U.S. Census Bureau)

Age

Frequency

0 – 9

44

10 –19

66

20 –29

32

30 –39

53

40 – 49

35

50 – 59

31

60 – 69

23

70 –79

13

80 – 89

2

Questions & Answers

QUESTION:

Problem 51E

Finding the Mean of a Frequency Distribution In Exercise, approximate the mean of the frequency distribution

Ages The ages of the residents of Medicine Lake, Montana, in 2010 (Source: U.S. Census Bureau)

Age

Frequency

0 – 9

44

10 –19

66

20 –29

32

30 –39

53

40 – 49

35

50 – 59

31

60 – 69

23

70 –79

13

80 – 89

2

ANSWER:

Solution :

Step 1 of 1:

Given the ages of the residents of Medicine Lake, Montana, in 2010.

Age

Frequency

  (f)

0 – 9

44

10 – 19

66

20 – 29

32

30 – 39

53

40 – 49

35

50 – 59

31

60 – 69

23

70 –79

13

80 – 89

2

Our goal is:

We need to find the mean of the frequency distribution.

Now we have to find the midpoint.

The Midpoint formula is

Midpoint =

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