The slope of the regression line of Y on X must always assume a positive value.

Name: The slope of the regression line of Y on X must always assume a positive value.
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Question

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The slope of the regression line of Y on X can be positive, negative, or zero, depending on the relationship between variables X and Y. If X and Y have a positive relationship, the slope is positive; if they have a negative relationship, the slope is negative; and if there is no relationship, the slope can be zero.

The Slope of the Regression Line of Y on X