# Question: a Draw a scatter diagram treating x as the explanatory

(a) Draw a scatter diagram treating x as the explanatory variable and y as the response variable.

(b) Select two points from the scatter diagram, and ﬁnd the equation of the line containing the points selected.

(c) Graph the line found in part (b) on the scatter diagram.

(d) Determine the least-squares regression line.

(e) Graph the least-squares regression line on the scatter diagram.

(f ) Compute the sum of the squared residuals for the line found in part (b).

(g) Compute the sum of the squared residuals for the least-squares regression line found in part (d).

(h) Comment on the ﬁt of the line found in part (b) versus the least-squares regression line found in part (d).

(b) Select two points from the scatter diagram, and ﬁnd the equation of the line containing the points selected.

(c) Graph the line found in part (b) on the scatter diagram.

(d) Determine the least-squares regression line.

(e) Graph the least-squares regression line on the scatter diagram.

(f ) Compute the sum of the squared residuals for the line found in part (b).

(g) Compute the sum of the squared residuals for the least-squares regression line found in part (d).

(h) Comment on the ﬁt of the line found in part (b) versus the least-squares regression line found in part (d).

**View Solution:**## Answer to relevant Questions

Use the results from Problem 2 to compute and interpret R2. (a) The correlation between number of married residents and number of unemployed residents in 2008 for the 50 states and Washington, DC, is 0.922. A scatter diagram of the data drawn in MINITAB is shown on the following ...Match the linear correlation coefﬁcient to the scatter diagrams. The scales on the x- and y-axes are the same for each diagram. (a) r = 0.787 (b) r = 0.523 (c) r = 0.053 (d) r = 0.946 For each of the following statements, explain whether you think the variables will have positive correlation, negative correlation, or no correlation. Support your opinion. (a) Number of children in the household under the ...A doctor wanted to determine whether a relation exists between a male’s age and his HDL (so-called good) cholesterol. He randomly selected 17 of his patients and determined their HDL cholesterol levels. He obtained the ...Post your question