06. Video: Multiple Linear Regression Model Results

Note: at 0:33 the unit in the video should be ft² not ft³

In this video, the coefficients had positive and negative values. Therefore, we can interpret each coefficient as the predicted increase or decrease in the response for every one unit increase in the explanatory variable, holding all other variables in the model constant.

However, in general, coefficients might be positive or negative. Therefore, each coefficient is the predicted change in the response for every one unit increase in the explanatory variable, holding all other variables in the model constant.

This interpretation is very similar to what you saw in the last lesson with the simple addition of the phrase "holding all other variables constant" meaning only the variable attached to the coefficient changes, while all other variables stay the same.