The table below gives the per-pupil expenditures (in thousands of dollars) and their frequencies for the 50 states and the District of Columbia. Expenditure ($ thousands) Frequency 1-3 4-6 7-9 28 10-12 14 13-15 (a) Display these data with a frequency histogram. 30 30 28 28 25 25 20 20 Frequency 15 14 Frequency 15 14 10 10 6 5 1-3 4-6 7-9 10-12 13–15 1-3 4-6 7-9 10-12 13-15 Expenditure ($ thousands) Expenditure ($ thousands) 30 30 28 28 25 25 20 20 Frequency 15 14 Frequency 15 14 10 10 6 6. 1-3 4-6 7-9 10-12 13-15 1-3 4-6 7-9 10-12 13-15 Expenditure ($ thousands) Expenditure ($ thous ands) (b) Find the mean per-pupil expenditure. (Round your answer to two decimal places.) 28 x thousand dollars

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 10CT
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please help solve the b) parts of the questions.

The table below gives the per-pupil expenditures (in thousands of dollars) and their frequencies for the 50 states and the District of Columbia.
Expenditure
($ thousands)
Frequency
1-3
4-6
6
7-9
28
10-12
14
13-15
(a) Display these data with a frequency histogram.
30
30
28
28
TT
25
25
20
20
Frequency 15
Frequency 15
14
10
10
6
5
5
1-3
4-6
7-9
10-12 13-15
1-3
4-6
7-9
10-12 13-15
Expenditure ($ thousands)
Expenditure ($ thousands)
30
30
28
28
25
25
20
20
Frequency 15
14
Frequency 15
14
10
10
6
6
5-
5-
3.
1-3
4-6
7-9
10-12 13-15
1-3
4-6
7-9
10-12 13-15
Expenditure ($ thous ands)
Expenditure ($ thousands)
(b) Find the mean per-pupil expenditure. (Round your answer to two decimal places.)
28
x thousand dollars
Transcribed Image Text:The table below gives the per-pupil expenditures (in thousands of dollars) and their frequencies for the 50 states and the District of Columbia. Expenditure ($ thousands) Frequency 1-3 4-6 6 7-9 28 10-12 14 13-15 (a) Display these data with a frequency histogram. 30 30 28 28 TT 25 25 20 20 Frequency 15 Frequency 15 14 10 10 6 5 5 1-3 4-6 7-9 10-12 13-15 1-3 4-6 7-9 10-12 13-15 Expenditure ($ thousands) Expenditure ($ thousands) 30 30 28 28 25 25 20 20 Frequency 15 14 Frequency 15 14 10 10 6 6 5- 5- 3. 1-3 4-6 7-9 10-12 13-15 1-3 4-6 7-9 10-12 13-15 Expenditure ($ thous ands) Expenditure ($ thousands) (b) Find the mean per-pupil expenditure. (Round your answer to two decimal places.) 28 x thousand dollars
The table gives the unemployment rates for civilian workers in a country for selected years 1960–2013.
Year
1960
1970
1980
1990
2000
2010
2011
2012
2013
Unemployment rate
5.6
4.8
7.1
5.5
4.0
9.8
9.1
8.3
8.0
(a) Display these data with a bar graph.
Percent
Percent
Percent
A bar graph with 9 class labels along the horizontal axis is
GV ontal axis is in years. The vertical axis is
labeled: Percent Unemployed.
Unemployed
Unemployed
10
10
Vertical rectangles are drawn centered ove the respective dlass
labels8Moving left to right, information about the rectangles
(beginning with class label) is listed below.
8
8
6
• 1960: 5.6 units tall
• 1970: 4.8 units tall
• 1980: 7.1 units tall
• 1990: 5.5 units tall
• 2000: 4 units tall
• 2010: 9.8 units tall
4
4
2011: 8.3 units tall
• 2012: 8 units tall
1960 1970180 1990 2000 2010 2011 2012 2013
• 2013: 9.1 units tall
1960 1970 1980 1990 2000 2010 2011 2012 2013
1960 1970 1980 1990 2000 2010 2011 2012 2013
Percent
Unemployed
10
8
4
1960 1970 1980 1990 2000 2010 2011 2012 2013
(b) Summarize the data by finding the mean and standard deviation of the unemployment rate. (Round your answers to two decimal places.)
mean
standard deviation
Transcribed Image Text:The table gives the unemployment rates for civilian workers in a country for selected years 1960–2013. Year 1960 1970 1980 1990 2000 2010 2011 2012 2013 Unemployment rate 5.6 4.8 7.1 5.5 4.0 9.8 9.1 8.3 8.0 (a) Display these data with a bar graph. Percent Percent Percent A bar graph with 9 class labels along the horizontal axis is GV ontal axis is in years. The vertical axis is labeled: Percent Unemployed. Unemployed Unemployed 10 10 Vertical rectangles are drawn centered ove the respective dlass labels8Moving left to right, information about the rectangles (beginning with class label) is listed below. 8 8 6 • 1960: 5.6 units tall • 1970: 4.8 units tall • 1980: 7.1 units tall • 1990: 5.5 units tall • 2000: 4 units tall • 2010: 9.8 units tall 4 4 2011: 8.3 units tall • 2012: 8 units tall 1960 1970180 1990 2000 2010 2011 2012 2013 • 2013: 9.1 units tall 1960 1970 1980 1990 2000 2010 2011 2012 2013 1960 1970 1980 1990 2000 2010 2011 2012 2013 Percent Unemployed 10 8 4 1960 1970 1980 1990 2000 2010 2011 2012 2013 (b) Summarize the data by finding the mean and standard deviation of the unemployment rate. (Round your answers to two decimal places.) mean standard deviation
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