STATISTICS F/BUSINESS+ECONOMICS-TEXT
13th Edition
ISBN: 9781305881884
Author: Anderson
Publisher: CENGAGE L
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Textbook Question
Chapter 2, Problem 54SE
Refer to the data set in Table 2.18.
a. Construct a crosstabulation with Year Founded as the row variable and % Graduate as the column variable. Use classes starting with 1600 and ending with 2000 in increments of 50 for Year Founded. for % Graduate, use classes starting with 35% and ending with 100% in increments of 5%.
b. Compute the row percentages for your crosstabulation in part (a).
c. Comment on any relationship between the variables.
TABLE 2.18 DATA FOR A SAMPLE OF PRIVATE COLLEGES AND UNIVERSITIES
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Consider the following data on the number of eastern bluebirds recorded in a survey from 1970 to 2010.
Year
No. of Eastern Bluebird
1970
200
1975
300
1980
125
1985
250
1990
425
1995
450
2000
575
2005
675
2010
500
a) Make a scatter plot of the number of birds vs. year record.
b) Create a table with this data that compares Years Since 1900 vs. the number of birds. Fill in extra columns for Years-Since-Squared and Years*Birds. Complete the table by adding rows for column totals and column averages.
c) Calculate the linear regression for this model.
e) Calculate the correlation coefficient for this model.
f) Translate your linear regression so that the model is now Year vs. Number of birds.
g) Add the model to your scatter plot.
h) Compute the residual errors for your model.
i) Plot your residual errors.
j) Interpolate your model to find the number of birds in 1983 and 2001.
The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995.
Year
Retail Sales
0
85.851
3
108.426
6
141.781
9
169.256
12
202.297
15
222.266
Let yy be the retails sales in billions of dollars in xx years since 1995. A linear model for the data is y=9.44x+84.182y=9.44x+84.182.
B) To the nearest billion, estimate the retails sales in the U. S. in 2013
Use the equation to find the year in which retails sales will be $245 billion.
Chapter 2 Solutions
STATISTICS F/BUSINESS+ECONOMICS-TEXT
Ch. 2.1 - Methods 1. The response to a question has three...Ch. 2.1 - A partial relative frequency distribution is...Ch. 2.1 - A questionnaire provides 58 Yes, 42 No, and 20...Ch. 2.1 - for the 20102011 viewing season, the top five...Ch. 2.1 - In alphabetical order, the six most common last...Ch. 2.1 - Nielsen Media Research provided the list of the 25...Ch. 2.1 - The Canmark Research Center Airport Customer...Ch. 2.1 - Data for a sample of 55 members of the Baseball...Ch. 2.1 - Nearly 1.8 million bachelors degrees and over...Ch. 2.1 - VirtualTourist provides ratings for hotels...
Ch. 2.2 - Consider the following data. a. Develop a...Ch. 2.2 - Consider the following frequency distribution....Ch. 2.2 - Construct a histogram for the data in exercise 12.Ch. 2.2 - Consider the following data. a. Construct a dot...Ch. 2.2 - Construct a stem-and-leaf display for the...Ch. 2.2 - Construct a stem-and-leaf display for the...Ch. 2.2 - Applications A doctors office staff studied the...Ch. 2.2 - CBSSports.com developed the Total Player Ratings...Ch. 2.2 - Based on the tons handled in a year, the ports...Ch. 2.2 - The London School of Economics and the Harvard...Ch. 2.2 - Fortune provides a list of Americas largest...Ch. 2.2 - entrepreneur magazine ranks franchises using...Ch. 2.2 - The DATAfile EngineeringSalary contains the median...Ch. 2.2 - Each year America.EDU ranks the best paying...Ch. 2.2 - The 2011 Cincinnati Flying Pig Half-Marathon (13.1...Ch. 2.3 - The following data are for 30 observations...Ch. 2.3 - The following observations are for two...Ch. 2.3 - The Daytona 500 is a 500-mile automobile race held...Ch. 2.3 - The following crosstabulation shows the average...Ch. 2.3 - Recently, management at Oak Tree Golf Course...Ch. 2.3 - The following crosstabulation shows the number of...Ch. 2.3 - Each year Forbes ranks the worlds most valuable...Ch. 2.3 - Refer to Table 2.12. a. Prepare a crosstabulation...Ch. 2.3 - The U.S. Department of Energys Fuel Economy Guide...Ch. 2.4 - The following 20 observations are for two...Ch. 2.4 - Consider the following data on two categorical...Ch. 2.4 - The following crosstabulation summarizes the data...Ch. 2.4 - A study on driving speed (miles per hour) and fuel...Ch. 2.4 - The Current Results website lists the average...Ch. 2.4 - People often wait until middle age to worry about...Ch. 2.4 - Smartphones are advanced mobile phones with...Ch. 2.4 - The Northwest regional manager of an outdoor...Ch. 2 - Approximately 1.5 million high school students...Ch. 2 - The DATAfile MedianHousehold contains the median...Ch. 2 - Data showing the population by state in millions...Ch. 2 - A startup companys ability to gain funding is a...Ch. 2 - Consumer complaints are frequently reported to the...Ch. 2 - The term Beta refers to a measure of a stocks...Ch. 2 - The U.S. Census Bureau serves as the leading...Ch. 2 - western University has only one womens softball...Ch. 2 - Fortune magazine publishes an annual survey of the...Ch. 2 - Table 2.18 shows a portion of the data for a...Ch. 2 - Refer to the data set in Table 2.18. a. Construct...Ch. 2 - Refer to the data set in Table 2.18. a. Construct...Ch. 2 - Refer to the data set in Table 2.18. a. Prepare a...Ch. 2 - Google has changed its strategy with regard to how...Ch. 2 - A zoo has categorized its visitors into three...Ch. 2 - Pelican Stores Pelican Stores, a division of...Ch. 2 - Motion Picture Industry The motion picture...Ch. 2 - Queen City Cincinnati, Ohio, also known as the...
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