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Chapter 2: 132E (page 133)

Most valuable NFL teams.Refer to the Forbeslisting of the 2015 values of the 32 teams in the National Football League (NFL), Exercise 2.26 (p. 84). Construct a scatterplot to investigate the relationship between 2015 value (\( millions) and operating income (\) millions). Would you recommend that an NFL executive use operating income to predict a team’s current value? Explain.

Short Answer

Expert verified

The graph is given below:

There is a positive correlation between the current value and the operating income. Therefore, I would suggest any NFL executive use operating income to predict the team's current value.

Step by step solution

01

Constructing the scatter plot and interpreting it

The graph is given below:

There is a positive relationshipbetween the current value of the team and the operating expense. As the operating income increases, the current value also increases.

Due to this correlation,I would recommend NFL executives to use operating income as a guide to estimate the current value.The higher the team's operating income, the higher the current value.

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Most popular questions from this chapter

Describe how the mean compares to the median for distribution as follows:

a.Skewed to the left

b.Skewed to the right

c.Symmetric

Performance of stock screeners.Investment companies provide their clients with automated tools—called stock screeners—to help them select a portfolio of stocks to invest in. The American Association of Individual Investors (AAII) provides statistics on stock screeners at its Website, www.aaii.com. The next table lists the annualized percentage return on investment (as compared to the Standard & Poor’s 500 Index) for 13 randomly selected stock screeners. (Note:A negative annualized return reflects a stock portfolio that performed worse than the S&P 500.)

(9.0, -.1, -1.6, 14.6, 16.0, 7.7, 19.9, 9.8, 3.2, 24.8, 17.6, 10.7, 9.1)

a.Compute the mean for the data set. Interpret its value.

b.Compute the median for the data set. Interpret its value.

Calculate the range, variance, and standard deviation for the following samples:

a.4, 2, 1, 0, 1

b.1, 6, 2, 2, 3, 0, 3

c.8, -2, 1, 3, 5, 4, 4, 1, 3, 3

d.0, 2, 0, 0, -1, 1, -2, 1, 0, -1, 1, -1, 0, -3,-2, -1, 0, 1

Calculate the mean for samples where

a.n=10,∑x=25b.n=16,∑x=400c.n=45,∑x=35d.n=18,∑x=242

Question: Construct a scatterplot for the data in the following table.

Variable 1: 5 3 -1 2 7 6 4 0 8

Variable 2: 14 3 10 1 8 5 3 2 12
See all solutions

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