STAT TECH IN BUSINESS & ECON AC
STAT TECH IN BUSINESS & ECON AC
18th Edition
ISBN: 9781264731657
Author: Lind
Publisher: MCG
Question
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Chapter 13, Problem 17E

(a)

To determine

To create: The scatterplot of the data.

(b)

To determine

To calculate: The correlation coefficient between the variables.

(c)

To determine

The regression equation.

(d)

To determine

To find: The predicted value of sales.

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Bloomberg Intelligence listed 50 companies to watch in 2018 (bloomberg.com/features/companies-to-watch-2018). Twelve of the companies are listed here with their total assets and 12-month sales. Let sales be the dependent variable and total assets the independent variable. Draw a scatter plot Compute the correlation coefficient Determine the regression equation For a company with $100 billion in assets, predict the 12- month sales.
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The data represent the cost, return on investment, and graduation rate for a random sample of fifty colleges or universities in the United States. The data is from payscale.com. The variable "Cost" represents the four-year cost including tuition, supplies, room and board of attending the school. The variable "Annual ROI" represents the return on investment for graduates of the school. It essentially represents how much you would earn on the investment of attending the school. The variable "Grad Rate" represents the graduation rate of the school. Complete parts (a) and (b) below. Click here to view the school data. Click here to view the table of critical values of the correlation coefficient. (a) Describe the association between Cost and Graduation Rate graphically by drawing a scatter diagram, treating Cost as the explanatory variable. Describe the association between Cost and Graduation Rate by finding the linear correlation between the two variables. Is there a linear association…

Chapter 13 Solutions

STAT TECH IN BUSINESS & ECON AC

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