Homework 3 Stats Complete Solution

Question: #8522

QUESTION 1
The heights (in inches) of 30 adult males are listed below.
70   72   71   70   69   73   69   68   70   71
67   71   70   74   69   68   71   71   71   72
69   71   68   67   73   74   70   71   69   68

Construct a ogive using five classes.
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QUESTION 2
Use the given frequency distribution to find the
(a) class width.
(b) class midpoints of the first class.
(c) class boundaries of the first class.

Phone Calls (per day)
Class        Frequency, f
8-11                           18
12-15                         23
16-19                         38
20-23                        47
24-27                         32

A.   (a) 4
(b) 10.5
(c) 8-11

B.   (a) 4
(b) 9.5
(c) 7.5-11.5

C.   (a) 3
(b) 10.5
(c) 8-11

D.   (a) 3
(b) 9.5
(c) 7.5-11.5
QUESTION 3
Provide an appropriate response.
The numbers of home runs that Sammy Sosa hit in the first 15 years of his major league baseball career are listed below. Make a stem-and-leaf plot for this data. What can you conclude about the data?
4   15   10   8   33   25   36   40   36   66   63   50   64   49   40
QUESTION 4
The heights (in inches) of 30 adult males are listed below.

70   72   71   70   69   73   69   68   70   71
67   71   70   74   69   68   71   71   71   72
69   71   68   67   73   74   70   71   69   68

Construct a relative frequency histogram using five classes.
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QUESTION 5
Provide an appropriate response.

The data below represent the alcohol-related driving fatalities, in thousands, in the United States over a 20-year period. Use a time series chart to display the data. Describe any trends shown.
YEAR: 1983 1985 1987 1989 1991 1993 1995 1997 1999 2001
FATALITIES: 25 23 24 22 20 18 18 17 17 17

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2 points
QUESTION 6
1.
The heights (in inches) of 30 adult males are listed below.

Construct a frequency distribution, a relative frequency distribution, and a cumulative frequency distribution using five classes.

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QUESTION 7
1.
Provide an appropriate response.

A study was conducted to determine how certain families pay on their credit card balances. Two hundred families with a household annual income between $25,000 and $49,999 were randomly selected and the results are listed below. Construct a pie chart of the data.

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QUESTION 8
1.
Provide an appropriate response.

Use a scatter plot to display the data below. All measurements are in milligrams per cigarette.

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2 points
QUESTION 9
1.
The heights (in inches) of 30 adult males are listed below.

Construct a frequency polygon using five classes.

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QUESTION 10
1.
The heights (in inches) of 30 adult males are listed below.

Construct a frequency histogram using five classes.

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2 points
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Solution: #8532

Homework 3 Stats Complete Solution