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=0.98. you estimate th slope of the least squares regression line y=a+bx for this data to be b=1.9. what is the y intercept a of the least squares regression line? round your answer to the nearest teth.
x 3 6 8 9 9 13 15 18 20 21 23 23
y 9 17 15 15 18 24 29 36 43 39 46 45

Question

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=0.98. you estimate th slope of the least squares regression line y=a+bx for this data to be b=1.9. what is the y intercept a of the least squares regression line? round your answer to the nearest teth.
x 3 6 8 9 9 13 15 18 20 21 23 23
y 9 17 15 15 18 24 29 36 43 39 46 45