simple MCQ

21. The coefficient of correlation ranges from -1 to +1, what is the range of “unstandardized B weight” or the slope for any independent variable in regression analysis?

a. -1 to +1

b. -10 to +10

c. -∞ to +∞

d. -100 to +100

        

22. Assuming any two variables’ have a perfect positive CORRELATION of +1 and the SLOPE of the best fit line in Bivariate Regression for some other set of a DV and an IV is found to be +1. What happens to the value of correlation and slope if, by including some more data, the angle of inclination of the lines in correlation and regression increases from the prior 45 degrees.

a. Correlation Decreases / Slope Increases

b. Correlation Increases / Slope Increases

c. Correlation Decreases / Slope Decreases

d. Correlation Increases / Slope Decreases