If the tests of the significance of the slope and the intercept are significant,this means that the straight-line relationship depicted by the slope and the intercept actually exists in the population and,therefore,the regression equation may be used as a prediction device.

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If the tests of significance of the slope and intercept are significant, it indicates that the relationship between the variables depicted by the slope and intercept is statistically significant and not due to chance. This allows us to use the regression equation to make predictions about the population.

If the Tests of the Significance of the Slope and the Intercept