If the coefficient of correlation is 0.84 the coefficient of determination is approximately select one: A. 0.3 B. 0.5 C. 0.7 D. none of the above
If the coefficient of correlation is 0.84 the coefficient of determination is approximately select one: A....
The correlation coefficient is a summary measure that Select one: a. is of limited use because it fails to indicate the direction of the relationship between the variables. b. indicates the change in Y for a one unit change in X. c. indicates the strength of linear relationship between a pair of quantitative variables. d. indicates the proportion of variation in Y that is explained by the variation in X. e. none of the above. In regression analysis, the F...
The coefficient of determination: Choose one • 10 points A. Represents the percentage of the data that can be explained by the correlation B. Is equal to the ratio of the explained variation to the total variation C. Is calculated by squaring the correlation coefficient. D. All of the above
find the coefficient of determination, given that the value of the linear correlation coefficient, r, is -0.451 D Question 8 1 pts Find the coefficient of determination, given that the value of the linear correlation coefficient, r, is -0.451. O 0.451 O 0.797 O 0.549 O 0.203
The coefficient of determination is the value of the correlation coefficient represented by c2 A. True B. False
Given the least squares regression line = -2.88 + 1.77x, and a coefficient of determination of 0.81, the coefficient of correlation is: A) -0.88 B) +0.88 C) +0.90 D) –0.90
Which of the following may have an adverse effect on a correlation coefficient? Select one: a. too many people in your experiment b. a negative relationship between your X and Y variables c. the scores on one variable have larger numbers than the other variable d. restricting the range of possible scores e. None
The correlation coefficient, rho: Select one: a. None of the given answers. b. Has the same sign as covariance, and is normalized between negative infinity and positive infinity. c. Has the opposite sign as the covariance and is non-normalized. d. Has the opposite sign as covariance and is normalized between -1 and 1.
Describe the difference between correlation and causation, including a discussion of the coefficient of correlation and the coefficient of determination (ch.13).
Use the value of the linear correlation coefficient r to find the coefficient of determination and the percentage of the total variation that can be explained by the linear relationship between the two variables. r 0.301 What is the value of the coefficient of determination? -(Round to four decimal places as needed.)
Use the value of the linear correlation coefficient to find the coefficient of determination and the percentage of the total variation that can be explained by the near relationship between the two variables r=0.316 What is the value of the coefficient of determination? 7- (Round to four decimal places as needed.) What is the percentage of the total variation that can be explained by the linear relationship between the two variables? Explained variation - (Round to two decimal places as...