Exhibit 12-5
The following information regarding a dependent variable Y) and an independent variable X) is provided.
$\begin{array} { l l }
Y&X\
1&1\2&2\3&3&\4&4\5&5
\end{array}$
-Refer to Exhibit 12-5. The least squares estimate of the slope is
A) 1
B) -1
C) 0
D) 3

Question

Exhibit 12-5
The following information regarding a dependent variable Y) and an independent variable X) is provided.
 $\begin{array} { l l } 
Y&X\
1&1\2&2\3&3&\4&4\5&5
\end{array}$
-Refer to Exhibit 12-5. The least squares estimate of the slope is
A) 1
B) -1
C) 0
D) 3

Quizplus · Accepted Answer

The slope of the least squares regression line is the covariance of X and Y divided by the variance of X. In this case, the covariance of X and Y is 10 and the variance of X is 10. Therefore, the slope of the least squares regression line is 1.

Exhibit 12-5 the Following Information Regarding a Dependent Variable Y) YX1122334455\begin{array} { l l } Y&X\\1&1\\2&2\\3&3&\\4&4\\5&5\end{array}Y12345​X12345​​

Exhibit 12-5
the Following Information Regarding a Dependent Variable Y) $\begin{array} { l l } Y&X\\1&1\\2&2\\3&3&\\4&4\\5&5\end{array}$