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Chemistry 13 Online
OpenStudy (anonymous):

can someone please help medal + fan :)

OpenStudy (anonymous):

@ganeshie8 @iambatman

OpenStudy (anonymous):

Jordan plotted the graph below to show the relationship between the temperature of his city and the number of cups of hot chocolate he sold daily:

OpenStudy (anonymous):

Part A: In your own words, describe the relationship between the temperature of the city and the number of cups of hot chocolate sold. (2 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. (3 points)

OpenStudy (anonymous):

OpenStudy (wolfe8):

Tell me: what do your elf eyes see?

OpenStudy (anonymous):

??

OpenStudy (wolfe8):

What do you see in the graph? When it's colder, what about the cups of hot chocolate? If it's warmer?

OpenStudy (anonymous):

your confusing me lol XD

OpenStudy (anonymous):

i see a graph with dots

OpenStudy (wolfe8):

Mkay see the bottom axis is for temperature, right? From left to right it's warmer. So what is the relationship with how many cups he sold?

OpenStudy (anonymous):

i dont know @wolfe8

OpenStudy (anonymous):

@hysusonic

OpenStudy (hysusonic):

@wolfe8 my elf eyes see a robot doing cheerleading moves and @im_chasing_dragons what's happening to the amount of cups of coffee as the temperature gets warmer?

OpenStudy (anonymous):

aha nice.. let me think

OpenStudy (anonymous):

as the coffee get hotter they sale more? @hysusonic

OpenStudy (hysusonic):

XD no sweetie the temperature of the city is the one on the X-axis not the temperature of the coffee

OpenStudy (anonymous):

lmao im not very smart XD

OpenStudy (hysusonic):

neither am i

OpenStudy (anonymous):

you seem pretty smart to me aha an educated Mexican ;)

OpenStudy (hysusonic):

lol unlike a mexican, i can do math... RACIST JOKE HYPE

OpenStudy (anonymous):

i must be Mexican cause i cant

OpenStudy (hysusonic):

lol nah don't put yourself down... math is hard

OpenStudy (anonymous):

yes i know lol i have a d in it XD a big d lol

OpenStudy (hysusonic):

giggity (perverted jokes aside) i had straight A's in math until i got into highschool then i had 2 d's and now i'm barely keeping a B algebra 2 is hard

OpenStudy (anonymous):

i bet lol

OpenStudy (hysusonic):

okay back to math do you know how to get the line of best fit

OpenStudy (anonymous):

umm no can you explain

OpenStudy (hysusonic):

does your teacher let you use graphing calculators?

OpenStudy (anonymous):

i do it on the computer my teacher said use the worldwide web lol

OpenStudy (anonymous):

@hysusonic

OpenStudy (hysusonic):

can you watch a video right now or nah?

OpenStudy (anonymous):

not on the laptop im on

OpenStudy (hysusonic):

why?

OpenStudy (anonymous):

its my moms and im not aloud to use youtube because her accounts sighned in

OpenStudy (hysusonic):

it isn't youtube

OpenStudy (anonymous):

well then yes

OpenStudy (hysusonic):

okay i'm looking for the video

OpenStudy (anonymous):

is it long because i have alot more work to do

OpenStudy (hysusonic):

nope it's about a minute and it should explain it well here's the link http://www.virtualnerd.com/pre-algebra/linear-functions-graphing/scatter-plot-best-fit-lines/scatter-plots-predictions/line-of-fit-scatter-plot

OpenStudy (anonymous):

ohh yeah i know what a line of fit is @hysusonic

OpenStudy (hysusonic):

lol so you know how to get it right?

OpenStudy (anonymous):

the answer tp the question?

OpenStudy (hysusonic):

the line of best fit is the answer to this question

OpenStudy (anonymous):

Part A: In your own words, describe the relationship between the temperature of the city and the number of cups of hot chocolate sold. (2 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. (3 points)

OpenStudy (anonymous):

thats the question it asked

OpenStudy (anonymous):

@hysusonic

OpenStudy (hysusonic):

internet is fixed and do you know how to get the line of best fit?

OpenStudy (anonymous):

i dont know how to get it this is my last question you think you could help explain the answer?

OpenStudy (hysusonic):

maybe

OpenStudy (anonymous):

maybe aha?

OpenStudy (hysusonic):

aha? what are this aha?

OpenStudy (anonymous):

like a laugh lol

OpenStudy (hysusonic):

oh i thought it was an aha moment... WOW i gotta stop listening to my teachers

OpenStudy (anonymous):

lol an aha moment

OpenStudy (anonymous):

you there? @hysusonic

OpenStudy (hysusonic):

nope i'm here

OpenStudy (anonymous):

yay

OpenStudy (hysusonic):

yea sorry got a wee bit distracted by youtube

OpenStudy (anonymous):

aha thanks!

OpenStudy (anonymous):

come back @hysusonic stop getting distracted lol

OpenStudy (hysusonic):

i don't think there is a line of best fit for this graph the points are too far apart

OpenStudy (anonymous):

ok so should i put that in my answer

OpenStudy (hysusonic):

i think so.. but hey i'm only a weirdo on the internet

OpenStudy (anonymous):

true but your a weirdo helping meee so good anough

OpenStudy (hysusonic):

lol kk

OpenStudy (aaronq):

There is always a line of best fit, not all (and sometimes none) of the points will be under the line. The line is an average (with the purpose of minimizing the distance from the line to each point). The easiest way to find the actual line is to plot all of the points on Excel (or similar software) and find the line of best fit (the program does this for you). So you'd make two columns: Temp Cups 20 20 30 18 35 15 40 22 45 20 50 20 60 14 65 18 70 8 80 10

OpenStudy (aaronq):

The previous image is not the actual trendline, just what it should roughly look like. To get the actual trendline (or line of best fit) open excel; 1. Plot the data 2. Highlight both columns 3. select "Chart", then "scatter plot" 4. Highlight data and select "Add Trendline" Make sure you select "display equation" in the trendline options The equation is displayed on the chart, look at the image that is attached.

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