The formula for a regression line is Y = a + bx.If your solution is Y = 15 + 4x then the regression line will move
A)up and to the left.
B)down and to the left.
C)up and to the right.
D)down and to the right.
E)Cannot tell with the information provided.

Question

Quizplus · Accepted Answer

If the equation of the regression line is Y = a + bx, then the value of "a" represents the Y-intercept, which is where the regression line intersects the Y-axis. In this case, the value of "a" is 15, which means the regression line intersects the Y-axis at Y = 15.

The value of "b" represents the slope of the regression line, which determines the direction and steepness of the line. In this case, the value of "b" is 4, which means that for every one unit increase in X, Y will increase by 4 units.

Therefore, the regression line will move up (because the Y-intercept is positive) and to the right (because the slope is positive). The correct choice is C, up and to the right.

The Formula for a Regression Line Is Y = a