Question

Part A: In your own words, describe the relationship between the temperature of the city and the sale of sweaters in the city. (5 points)

Part B: 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 slope and y-intercept. (5 points)

Answer 1

someone help please

Answer 2

Is the temperature going up or down? The dots?

Answer 3

@Roxy.girl

Answer 4

at 1 it is 12 at 5 it is 10.. it is going down...

Answer 5

can you just tell me the answer

Answer 6

just answer the part a and part b questions

Answer 7

ill be your fan and give you a medal @Roxy.girl

Answer 8

I am looking..

Answer 9

okay thank you so much @Roxy.girl

Answer 10

@rebeccaxhawaii can you help

Answer 11

@Cas_fangirl_14 can you help

Answer 12

My dad just told me to get off the computer. I won't be able to help. :(

Answer 13

aww

Answer 14

can someone please help

Answer 15

@mathmate

Answer 16

@Roxy.girl
I would love to help her, but CoC forbids us from giving direct answers, which is what she wants. She will need to learn how to find the lines of best fit, and she will also need to tell us the different ways she has learned (or she is expected to know), because there are different ways to find a line of best fit. Some are more accurate than others.

Answer 17

whos coco

Answer 18

wait @mathmate

Answer 19

then can you explain it to me @mathmate

Answer 20

@peachpi will you help

Answer 21

As I said, you need to tell us what you have learned, have you done graphical method, or by summations?

Answer 22

no i havent

Answer 23

i know that the line of best fit goes through the dots

Answer 24

it doesnt have to touch all of them just as much as it can touch

Answer 25

and i know when then temperture is higher in *C there are not as much sweaters that are bought

Answer 26

so i just need help with part b

Answer 27

Basically the line of best fit will pass through the scattered plot in the best way possible, such that the sum of the square of the vertical distance of each point from the line is a minimum.
There is a specific way of calculating the line of best fit, or regression line, sometimes it is called.
Here's a video that explains how that can be done.
IF this is not even close to what you have learned, then you would draw the line that roughly follows the dots, visually. For example,
Most of the time, you would want the line to have the same number of points on each side, and about the same number of point at one end as the other.
There are other approximate methods,
median-median method - https://www.youtube.com/watch?v=Ng5-UG5EY14