d. Of all possible estimators of a and ß that are linear in the Y; and unbiased, the least squares estimators that have the smallest variances are said to be... ..... according to the ***** . theorem....

d and e please

Extracted text: d. Of all possible estimators of a and ß that are linear in the Y; and unbiased, the least squares estimators that have the smallest variances are said to be... ..... according to the ***** . theorem. The .... is the proportion of the sample variability of the dependent variable e. explained by its linear relationship with the independent variable.