Sign of correlation coefficient- sign of slope of regression

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What is the relationship between the sign of the correlation coefficient and the sign of the slope of the regression line?

As the value of the correlation coefficient increases from 0 to 1, or decreases from 0 to -1, how do the points of the scatter plot fit the regression line?

In your own words, state the primary purpose of: regression analysis.

Reference no: EM1395461

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