Consider a simple linear regression model where total variation = 1235, explained variation = 1068, and b1 = -2.44. What is the sample correlation coefficient between x and y?Multiple choice question.- 0.9300.865- 0.8650.930

When simple linear regression is used to analyze a data set, we get total variation = 13.459 and unexplained variation (SSE) = 2.806. What is the coefficient of determination? (round to 2 decimal places)

If the coefficient of correlation between two variables is –0 9, then the coefficient of determination is(a) 0.9(b) 0.81(c) 0.1(d) 0.19.

If the correlation coefficient is .4, the percentage of variation in the dependent variable explained by the estimated regression equation is Group of answer choices.40%4%16%.16%

If for two variable x and y, the covariance, variance of x and variance of y are40, 16 and 256 respectively, what is the value of the correlation coefficient?(a) 0.01(b) 0.625(c) 0.4(d) 0.5

The covariance between two variables X and Y is 8.4 and their variances are 25and 36 respectively. Calculate Karl Pearson’s coefficient of correlation betweenthem.(a) 0.82(b) 0.28(c) 0.01(d) 0.09