Question

can somebody draw me the best fit line of this graph and tell me what you did to find it?

Answer 1

or at least tell me the points the best fit line would pass through?

Answer 2

@hartnn can you help?

Answer 3

@ganeshie8

Answer 4

:c

Answer 5

im no good at these :s

Answer 6

do you know anyone who is? :/

Answer 7

@nincompoop maybe?

Answer 8

is this a good best fit line?

Answer 9

is this one better?

Answer 10

since no specific points are given and you are to give the best fit line given the graph, your best bet is to just "eyeball" the best fit line.

your second one looks better because the residue above should "equal" the one below

Answer 11

i have to explain in sentences how i got the line...

Answer 12

but i just guessed

Answer 13

a best fit line minimizes the total distance above/below the points AND the line.

your first example was not a good example because the total distance above > total distance below the line.... but the second one was better.

Answer 14

how bout this one? :l

Answer 15

that one looks like distance below the line > distance above the line

Answer 16

i'd still say your second example is better.

Answer 17

grr

Answer 18

alright

Answer 19

"I found the best fit line by choosing between three lines that went through 2 different pair of points. After creating this lines, I then determined which line had almost equal distance on the top and bottom of the line from the points left over."

is that a good explanation?

Answer 20

but with less typos lol

Answer 21

good enough for the "eyeball" method.... as in this case...
this website tells about the best fit line and the residue:
http://www.zweigmedia.com/RealWorld/tutorialsf0/frames1_5.html

Answer 22

@ByteMe is this a good best fit line for this graph?

Answer 23

I'd agree....

Answer 24

yay :3

Answer 25

http://www.wolframalpha.com/input/?i=linear+fit+%7B%7B20%2C+280%7D+%7B30%2C+340%7D+%7B40%2C+400%7D+%7B50%2C+480%7D%7D

Answer 26

http://www.wolframalpha.com/input/?i=quartic+fit+%7B%7B20%2C+280%7D+%7B30%2C+340%7D+%7B40%2C+400%7D+%7B50%2C+480%7D%7D

Answer 27

the first one is best fit for linear regression. it's not bad, but not necessarily accurate.
the second one is best fit for quartic regression. it's pretty accurate from the graph, so I would use it if I had to choose between this one and linear.

Answer 28

whoaa,I didn't know you have a lot of regressions LOL...
what I suggest is plug in the coordinates in the linear, quadratic and quartic regressions...

Answer 29

http://www.wolframalpha.com/input/?i=fit+%7B%7B2%2C+12%7D+%7B4%2C+21%7D+%7B6%2C+19%7D+%7B8%2C+30%7D+%7B10%2C+29%7D+%7B12%2C+26%7D+%7B14%2C+35%7D+%7B16%2C+40%7D+%7B18%2C+46%7D+%7B20%2C+42%7D%7D

http://www.wolframalpha.com/input/?i=quintic+fit+%7B%7B2%2C+12%7D+%7B4%2C+21%7D+%7B6%2C+19%7D+%7B8%2C+30%7D+%7B10%2C+29%7D+%7B12%2C+26%7D+%7B14%2C+35%7D+%7B16%2C+40%7D+%7B18%2C+46%7D+%7B20%2C+42%7D%7D