Question

Describe how you can make the line of best fit. Write the approximate slope and y-intercept of the line of best fit. Show your work, including the points that you use to calculate the slope and y-intercept. http://prntscr.com/a8bt9f

Answer 1

@Tennis5518 @KamiBug @Qwertty123

Answer 2

Hello! :) Okay so do you know what the slope would be?

Answer 3

not really

Answer 4

@Qwertty123

Answer 5

You are given a set of data points that are already plotted. A "best fit" line, also known as a regression line, passes through the graphed points in such a way that the distribution of points and their distances from the line are about the same on both sides of the line.

Once you've drawn such a line, determine where the line crosses the y-axis. This is your "y-intercept." Next, determine the slope of the line.

Regression lines are usually written in the form y=a+bx or the form y = ax + b. Doesn't matter much which form you choose.

Write an approx. equation for this regression line (best fit line), using the slope and y-intercept you've calculated.

Note that your result doesn't have to be "exact."

Answer 6

You are given a set of data points that are already plotted. A "best fit" line, also known as a regression line, passes through the graphed points in such a way that the distribution of points and their distances from the line are about the same on both sides of the line.

Once you've drawn such a line, determine where the line crosses the y-axis. This is your "y-intercept." Next, determine the slope of the line.

Regression lines are usually written in the form y=a+bx or the form y = ax + b. Doesn't matter much which form you choose.

Write an approx. equation for this regression line (best fit line), using the slope and y-intercept you've calculated.

Note that your result doesn't have to be "exact."

Answer 7

okay one second let me do the math

Answer 8

well, a straight line across from (0, 0) would do but since there has to be a y-intercept im not really sure...

Answer 9

@mathmale

Answer 10

@imqwerty

Answer 11

If the line really does go through the origin (0, 0), then the y-intercept is simply 0.

No question here about whether a y-intercept exists; it does exist. you have to find it.

What about the slope of the regression line?

Answer 12

Please note that this question requires you to show your work. If at all possible, draw the regression line on paper, take a screen shot of it, and share this screen shot. You also must show your calculations (of slope).

Answer 13

well, the slope would equal 2 correct? @mathmale

Answer 14

@mathmale