In a simple linear regression analysis,the sample correlation coefficient r and the estimate of the slope b₁_____ have the same sign. A)always B)sometimes C)never

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The sample correlation coefficient $r$ and the estimate of the slope $b$ in a simple linear regression analysis always have the same sign. This is because $b$ is calculated as $r(\frac{s_y}{s_x})$, where $s_y$ and $s_x$ are the standard deviations of the dependent and independent variables, respectively. Since standard deviations are always positive, the sign of $b$ is determined by the sign of $r$.

In a Simple Linear Regression Analysis,the Sample Correlation Coefficient R