Pearson eText Business Statistics: First Course -- Instant Access (Pearson+)
8th Edition
ISBN: 9780136880974
Author: David Levine, David Stephan
Publisher: PEARSON+
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The Seneca Children’s Fund (SCF) is a local charity that runs a summer camp for disadvantaged children. The fund’s board of directors has been working very hard over recent years to decrease the amount of overhead expenses, a major factor in how charities are rated by independent agencies. The following data show the percentage of the money SCF has raised that was spent on administrative and fund-raising expenses over the past seven years:
Year
Period (t)
Expense (%)
2003
1
13.9
2004
2
12.2
2005
3
10.5
2006
4
10.4
2007
5
11.5
2008
6
10.0
2009
7
8.5
a. Construct a time series plot. What type of pattern exists in the data?b. Use simple linear regression analysis to find the parameters for the line that minimizes MSE for this time series.c. Forecast the percentage of administrative expenses for year 8.d. If SCF can maintain its current trend in reducing administrative expenses, how long will it take for SCF to achieve a level of 5% or less?
What is the relationship between the average income and the level of education in a given population, and how does this relationship vary across different regions and demographic groups?
Follow-up question on the Household finances:
Pls. Illustrate the output path diagram. Thanks.
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