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.

A bivariate relationship has a correlation coefficient ( � ) (r) of 0.78. 0.78. Identify the coefficient of determination of this relationship:

Correlation coefficients vary fromQuestion 10Answera.0.0 to 1.0.b.-10.0 to 10.0c.-1.0 to 0.0.d.-1.0 to 1.0

If the coefficient of determination is 1, then the correlation coefficient ___. Group of answer choicescan be either -1 or +1can be any value between -1 to +1must be -1must also be equal to 1

The following data represents the scores of two variables, x and y: x: 10, 15, 20, 25, 30 y: 20, 25, 30, 35, 40 The correlation coefficient between x and y is:a.0.7b.0.8c.0.9d.1Clear my choice

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