11. From the following scatter plot, we can say that between y and x there is a)

Question

11. From the following scatter plot, we can say that between y and x there is a) perfect positive correlation b) virtually no correlation c) positive correlation d) negative correlation e) perfect negative correlation 12. If there is perfect negative correlation between two sets of numbers, then a)r=0 c) r = +1 d) SSE-1 e) MSE 1 13. The following data is to be used to construct a regression model: 4 4 10 10 y 5 4 The regression equation is a)y= 16.49 + 1.43x b) y = 1.19 + 0.91x c) y = 1 , 19 + 0.75x d)y 0.750.18r e)y= 0.91 + 4.06x 14. The total of the squared residuals is called the a) coefficient of determination b) sum of squares of error c) standard error of the estimate d) R-squared e) coefficient of correlation

Explanation / Answer

Following are the answers to your questiond

11 c Positive correlation

12 b r=-1

13. c

y = 1.192 + 0.753x

14. b

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