When calculating the correlation coefficient, it is important to specify which variable is the explanatory, and...
When calculating the correlation coefficient, it is important to specify which variable is the explanatory, and which is the response variable, because it affects the interpretation.
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When calculating the correlation coefficient, it is important to
specify which variable is the explanatory, and...
If a correlation coefficient is 0.80, then: O A. The explanatory variable is usually less than...
If a correlation coefficient is 0.80, then: O A. The explanatory variable is usually less than the response variable. O B. The explanatory variable is usually more than the response variable O C. Below average values of the explanatory variable are more often associated with below-average values of the response variable. O D. Below average values of the explanatory variable are more often associated with above-average values of the response variable. O E. None of the statements are correct.
Let r be the correlation coefficient. Denote the explanatory variable by X and the responsible variable...
Let r be the correlation coefficient. Denote the explanatory variable by X and the responsible variable by Y . Which statement is correct ? (A) Positive r indicates a perfect linear relationship between X and Y . (B) r is always a number between 0 and 1. (C) r is almost 0 if values of X’s and Y ’s are all positive. (D) The correlation of variables −X and Y is −r. (E) None of the above.
Draw a scatter diagram of the data. Which of the following represents the data? OA OB...
Draw a scatter diagram of the data. Which of the following
represents the data?
OA OB O C. Ο D. 110 110 60 70 110 110 Critical Values for Correlation Coefficient 3 0.997 4 0.950 5 0.878 辟稳ぷ2 11 7 0.754 8 0.707 9 0.666 10 0.632 11 0.602 12 0.576 13 0.553 The data in the table to the right are based on the results of a survey comparing the commute time of adults to Commute their score on...
Correlation coefficient tells you: Group of answer choices: which variable causes a change in another variable...
Correlation coefficient tells you: Group of answer choices: which variable causes a change in another variable if there is a difference between groups nothing important the strength and nature of the relationship between two variables
Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axis...
Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axis are the same for each scatter diagram (a)r= - 1. (b) r= -0.992, (c) r= -0.049 Response (a) Scatter diagram Explanatory (b) Scatter diagram (c) Scatter diagram Response Question Explanatory Response Explanatory Match the linear correlation coefficient to the scatter diagram. r= -0.025 Choose the correct graph below. ОА. ОВ. OC. OD 2 wody ..: E E Explanatory Explanatory Explanatory Explanatory Click to select...
8. An engineer wanted to determine how the weight of a car (a) Determine which variable...
8. An engineer wanted to determine how the weight of a car (a) Determine which variable is the likely explanatory affects gas mileage. The following data represent the weight variable and which is the likely response variable. of various cars and their gas mileage. Complete parts (a) through (d). The explanatory variable is the miles Miles per per gallon and the response variable is Car Weight (pounds) Gallon the weight А 3310 19 The explanatory variable is the weight 3680...
What is the predicted explanatory value?
You run a regression analysis on a bivariate set of data (n=87n=87). You obtain the regression equationy=−3.815x+47.575y=-3.815x+47.575with a correlation coefficient of r=−0.349r=-0.349 (which is significant at α=0.01α=0.01). You want to predict what value (on average) for the explanatory variable will give you a value of 160 on the response variable.What is the predicted explanatory value?x = (Report answer accurate to one decimal place.)
Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axis...
Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axis are the same for each scatter diagram. (a)r= 0.523, (b)r= 1, (c) r=0.946 Response (a) Scatter diagram Explanatory (b) Scatter diagram (c) Scatter diagram II Response Explanatory Response TIL Explanatory
which statement is true regarding variation in the explanatory variable? A. it affects the estimate of...
which statement is true regarding variation in the explanatory
variable?
A. it affects the estimate of
1
B. It affects variance of estimate of
1
C. Both of the above are true
D. Neither of the above is true
We were unable to transcribe this imageWe were unable to transcribe this image
6). a.b.b. The data in the table to the right are based on the results of...
6).
a.b.b.
The data in the table to the right are based on the results of a survey comparing the commute time of adults to their score on a well-being test. Complete parts (a) through (d) below. Click the icon to view the critical values for the correlation coefficient. Commute Time (in minutes) Well-Being Score 5 69.5 16 68.9 27 67.5 34 67.4 47 66.9 68 65.9 97 63.9 (a) Which variable is likely the explanatory variable and which is...
If a correlation coefficient is 0.80, then: O A. The explanatory variable is usually less than the response variable. O B. The explanatory variable is usually more than the response variable O C. Below average values of the explanatory variable are more often associated with below-average values of the response variable. O D. Below average values of the explanatory variable are more often associated with above-average values of the response variable. O E. None of the statements are correct.
Draw a scatter diagram of the data. Which of the following
represents the data?
OA OB O C. Ο D. 110 110 60 70 110 110 Critical Values for Correlation Coefficient 3 0.997 4 0.950 5 0.878 辟稳ぷ2 11 7 0.754 8 0.707 9 0.666 10 0.632 11 0.602 12 0.576 13 0.553 The data in the table to the right are based on the results of a survey comparing the commute time of adults to Commute their score on...
Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axis are the same for each scatter diagram (a)r= - 1. (b) r= -0.992, (c) r= -0.049 Response (a) Scatter diagram Explanatory (b) Scatter diagram (c) Scatter diagram Response Question Explanatory Response Explanatory Match the linear correlation coefficient to the scatter diagram. r= -0.025 Choose the correct graph below. ОА. ОВ. OC. OD 2 wody ..: E E Explanatory Explanatory Explanatory Explanatory Click to select...
8. An engineer wanted to determine how the weight of a car (a) Determine which variable is the likely explanatory affects gas mileage. The following data represent the weight variable and which is the likely response variable. of various cars and their gas mileage. Complete parts (a) through (d). The explanatory variable is the miles Miles per per gallon and the response variable is Car Weight (pounds) Gallon the weight А 3310 19 The explanatory variable is the weight 3680...
Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axis are the same for each scatter diagram. (a)r= 0.523, (b)r= 1, (c) r=0.946 Response (a) Scatter diagram Explanatory (b) Scatter diagram (c) Scatter diagram II Response Explanatory Response TIL Explanatory
which statement is true regarding variation in the explanatory
variable?
A. it affects the estimate of
1
B. It affects variance of estimate of
1
C. Both of the above are true
D. Neither of the above is true
We were unable to transcribe this imageWe were unable to transcribe this image
6).
a.b.b.
The data in the table to the right are based on the results of a survey comparing the commute time of adults to their score on a well-being test. Complete parts (a) through (d) below. Click the icon to view the critical values for the correlation coefficient. Commute Time (in minutes) Well-Being Score 5 69.5 16 68.9 27 67.5 34 67.4 47 66.9 68 65.9 97 63.9 (a) Which variable is likely the explanatory variable and which is...
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