Question

If y = -10X and X = -0.17, then r is equal to:​

Answer 1

Answer:

Negative, since the coefficent of x is negative — that’s all you know. Assuming that the formula above is a regression line, then 5 is the y-intercept (A), and -3 the slope (B). The beta-weight (standardized regression coefficient, which in a simple regression equals the correlation coefficient) also depends on the variance of both x and y:

β=Bσx/σy;

You’d also have to know that to determine what the correlation is.