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Chapter 3: Q 14. (page 172)

Windy city Is it possible to use temperature to predict wind speed? Here is a scatterplot showing the average temperature (in degrees Fahrenheit) and average wind speed (in miles per hour) for 365 consecutive days at O鈥橦are International Airport in Chicago.14 Is r>0 or r<0? Closer to r=0orr=卤1? Explain your reasoning.

Short Answer

Expert verified

The correlation is less than 0 and also the pattern is closer to the horizontal axis which means that the correlation is closer to 0 that is, r<0 and closer to 0

Step by step solution

01

Given information

The figure is:

02

Explanation

The scatter plot is a graph that shows the association between two variables. It displays the level of correlation between two variables, known as the dependent and independent variables.

The data points in the accompanying picture are arranged in a downward pattern, indicating that the correlation is less than 0 and the pattern is also closer to the horizontal axis, indicating that the correlation is closer to 0 r<0andcloserto0

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Most popular questions from this chapter

The stock market Some people think that the behavior of the stock market in January predicts its behavior for the rest of the year. Take the explanatory variable x to be the percent change in a stock market index in January and the response variable y to be the change in the index for the entire year. We expect a positive correlation between x and y because the change during January contributes to the full year鈥檚 change. Calculation from data for an 18-year period gives x = X=1.75%sx=5.36%y=9.07%sy=15.35%r=0.596

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