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Answer» The following precautions are necessary while using the regression: - We should make the use of the estimates obtained only after examining the assumption of linear regression by coefficient of determination R2.
- The regression relation obtained by the scatter diagram or by the least squares should not be used for the values which are very far from the given values of independent variable.
- If the correlation between Y and X is found near to perfect linear correlation then only the conclusions drawn from the regression line should be used.
- If the linear regression model is not found proper, then in such a case only after obtaining the proper linear regression model using statistical methods, we should make use of estimates and conclusions from the regression model.
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