The correlation coefficient, r, is a number between 0 and 10 -10 and 10 0 and...
If the correlation between variables x and y is r = .50, then the coefficient of determination is a. .50. b. 0. c. 1.00. d. .25.
Oo Question 3 1 pts Find the value of the linear correlation coefficient r for the given data: 62 53 64 52 52 f 58 V 158 176 151 164 164 174 162 0 -0.775 0 -0.081 O 0.754 ОО Question 4 1 pts
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.
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
13 the following tabe show the correlation coefficient between housing sold the dependent variable in a regression and the three independent variables: Permit price and employment SOLD PERMIT PRICE FMP SOLD 0779 0.274 -0.295 PERMIT 07291 -047005430 PRICE 0274 0.470 1 0 .906 EMP 0295 -0.543 0.906 1 Choose one of the following answers Multiple Choice The high c on b ons and what is muti n this regression The high correlation between price and employment shows that there is...
b. Find the linear correlation coefficient, r, then determine whether there is sufficient evidence to support the claim of a linear correlation between the two variable. The linear correlation coefficient is r _______
correlation coefficient quantifies linear relationship with a number between
What is the correlation coefficient when the point (10.2) is excluded? r = _ (round to three decimal places as needed.) % 10.2.11 Question Help 104• Refer to the accompanying scatterplot. a. Examine the pattern of all 10 points and subjectively determine whether there appears to be a strong correlation between x and y. b. Find the value of the correlation coefficient r and determine whether there is a linear correlation. c. Remove the point with coordinates (1,10) and find...
Which of the following are true statements about the correlation coefficient r? I. A correlation coefficient of .3 means that 30% of the points are highly correlated. II. The square of the correlation measures the proportion of the y-variance that is predictable from a knowledge of x. III. Perfect correlation, that is, when the points lie exactly on a straight line is r = 0.
(a) Suppose n = 6 and the sample correlation coefficient is r=0.894. IS significant at the 1% level of significance (based on a two-tailed test)? (Round your answers to three decimal places.) critical Conclusion: Yes, the correlation coefficient p is significantly different from 0 at the 0.01 level of significance. No, the correlation coefficient p is not significantly different from 0 at the 0.01 level of significance. (b) Suppose n = 10 and the sample correlation coefficient is r =...