Question

For problems 1 and 2, graph the data points. Draw the line of best fit and, using complete sentences, explain how you found it in 3-4 sentences. Write the equation for the line of best fit in standard form.
1. (10, 150) (20, 275) (30, 340) (40, 400) (50, 475)
Title: Intersection Cars
Horizontal axis: Minutes elapsed
Vertical axis: Total cars passing through
2. (2, 12) (4, 21) (6, 19) (8, 30) (10, 29) (12, 26) (14, 35) (16, 40) (18, 46) (20, 42)
Title: Savings Account
Horizontal axis: Years
Vertical axis: Balance in $ × 1000
***Please message me for other part of the ?

Answer 1

Create your own graph using data points found through research or by surveying friends and family members. You may have whatever labels you choose for title, and horizontal and vertical axes. Using complete sentences, describe how you came up with your idea and how you found your data points in 1–2 paragraphs. Your graph and data points must be unique.

Draw the line of best fit and write its equation in standard form.

You may create the three graphs using any of the following methods:
Use Graphing Software

Visit the Course Information area to access directions on downloading and using GeoGebra.

Graph by Hand

You will need to scan or fax these three graphs to your instructor.

Use a Spreadsheet

Enter the x-coordinates in one column of cells then enter the y-coordinates in another column. Highlight all the cells, then access the graphing feature.

Answer 2

Ignore the *** sentence

Answer 3

This might be easier if you had something like excel. Are you allowed to use that?

Answer 4

oh wait, you can use geogebra...didn't see that. Do you know how to use geogebra?

Answer 5

Yes, I think so, I'm downloading it now

Answer 6

alright

Answer 7

Could you describe to me step to step how to conquer this?

Answer 8

Ok did you install geogebra?

Answer 9

I'm having trouble downloading it

Answer 10

hmm maybe you need to update your java?

Answer 11

possibly, my computer isn't relatively new :/ maybe I should just do it by hand. could you take me step by step?

Answer 12

one moment, there might be a calculator online to use...finding the equation of the line of best fit takes a long time to do by hand

Answer 13

ok I found one here

http://www.alcula.com/calculators/statistics/linear-regression/

Go to the link above and for #1 enter the data


10,150
20,275
30,340
40,400
50,475


into the box


Notice how each ordered pair gets its own line.

Answer 14

oh yes, i see it

Answer 15

so what that page does is plot each point and draw the line of best fit...keep in mind you'll have to convert the equation to standard form

Answer 16

Oh right, thanks. Can I use that page for #2 as well?

Answer 17

yes, just use those numbers instead

Answer 18

then for #3, just make up your own data set or use data that you collected from some survey/experiment

Answer 19

could I use the same data for #3?

Answer 20

no, they want you to come up with your own data

Answer 21

Oh.. true.. goodness this may take a little time

Answer 22

If making up your own data set will take forever, then maybe you can search online for one?

Answer 23

There's a lot of data out there

Answer 24

Oh true, thanks for the help once again haha

Answer 25

you're welcome