In a simple linear regression problem,r and b₁ A)may have opposite signs. B)must have the same sign. C)must have opposite signs. D)are equal.

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In a simple linear regression problem, the sign of the correlation coefficient (r) and the slope of the regression line (b) must be the same. This is because the slope b is calculated as a function of r and the standard deviations of X and Y, and the sign of r directly influences the sign of b.

In a Simple Linear Regression Problem,r and B1

In a Simple Linear Regression Problem,r and B₁