What is the y-intercept of this least squares regression line?
Question 13 of 25

The graph and accompanying table shown here display 12 observations of a pair of variables (x, y).

The variables x and y are positively correlated, with a correlation coefficient of r = 0.97.

You estimate the slope of the least squares regression line, y = a + bx, for these data values to be b = 2. What is the y-intercept, a, of the least squares regression line? Round your answer to the nearest tenth.

x 3 6 8 9 9 13 15 18 20 2

Question

What is the y-intercept of this least squares regression line?
Question 13 of 25


The graph and accompanying table shown here display 12 observations of a pair of variables (x, y).

The variables x and y are positively correlated, with a correlation coefficient of r = 0.97.

You estimate the slope of the least squares regression line, y = a + bx, for these data values to be b = 2. What is the y-intercept, a, of the least squares regression line? Round your answer to the nearest tenth.	

x 	3 	6 	8 	9 	9 	13 	15 	18 	20 	2