Question

When the correlation coefficient is positive, the slope of the regression line
should be ? ​

Answer 1

Answer:

Explanation: r= correlation coefficient and b1= slope. If we have a downward sloping trend-line then that means we have a negative (or inverse) correlation coefficient. Just the same as if we had an upward sloping trend-line then we would automatically have a positive (or direct) correlation coefficient.

Answer 2

Answer:

Both quantify the direction and strength of the relationship between two numeric variables. When the correlation (r) is negative, the regression slope (b) will be negative. When the correlation is positive, the regression slope will be positive.