explain  Regression analysis and its limations

For a linear regression modelling how the vocabulary size of a sixth grader is affected by the amount of television watched per day, the residuals are defined as the differences between Pick the actual amounts of television watched in the dataşet the actual vocabulary sizes in the dataset the vocabulary sizes predicted by the regression line

true or false. Explain Fixed effects regressions remove time-varing unobservables. In an explanatory variable, precision always increases when compared to OLS.

A negative correlation between variables X and Y will always result in a positive slope in the linear regression model. Cannot tell from the given information. False True