3 only c. A data point that has a negative residual is located below the regress

Question

3 only

c. A data point that has a negative residual is located below the regression line. O d. A residuals plot (l.e., residuals vs. x) should show a random scatter around o uestion 3 ot yet Suppose the correlation coefficient between a predictor variable (a person's height, measured in centimeters) and a response variable (a person's weight, measured in kilograms) is 0.72. Suppose that we change the units used to measure height from centimeters to inches and the units used to measure weight from kilograms to pounds, and then we recompúte the correlation coefficient. Which of the following would be true? nswered oints out of .00 uestion Select one: a. The new correlation coefficient should be the same: R = 0.72. b. The new correlation coefficient should be R = 0.72 x (2.54/2.2) ~ 0.83. c. The new correlation coefficient should be R = 072 x (2.2254 " 0.62. d. The new correlation coefficient should be something other than the options given here. iO O stion 4 The scatter plot below shows the percent of families who own thhir home vs. the percent of population living yet wered rban areas in 2010 for the 50 states and Puerto Rico. A linear regression model has been fit to these data and f? - 0.28 for this model. What is the correlation coefficient, R? ts out of Flag tion

Explanation / Answer

The correlation coefficient is 0.72

suppose we changed units from centimeter to inches then the

new correlation coefficient is 0.72.

Since correlation coefficient doesnot affected with units

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