Question

Somebody help please, thanks!

Question 1
The table represents data collected on the time spent studying (in minutes) and the resulting test grade.

Time Spent Studying (min): 52 37 31 9 26 40 22 10 45 34 19 60
Grade on Test: 95 84 72 58 77 86 72 43 90 81 62 98
Part 1: Create a scatter plot with the predicted line of best fit drawn on it. Determine the type of correlation (if any), and predict the model that will be used.
Part 2: Find the line of best fit for the data either by hand or using technology. Explain your method. Find the predicted score for each time listed in the table.

Answer 1

Part 3: Find the residuals, and decide if your model is a good fit. Explain your method. (If your model is not a good fit, complete Part 2 again with a different set of points or choose a different model.)

Answer 2

@boldjon @triciaal @mathmate @mathmale @mathstudent55 @zepdrix @sleepyjess

Answer 3

Do you know how to plot on a scatter plot?

Answer 4

@Zela101 Not really

Answer 5

@peachpi

Answer 6

@Zela101 Sorry, but I really need a restroom break. Ill be back in 5, continue on

Answer 7

You need to plot all the points first before proceeding with rest of the questions.

Answer 8

@Zela101
why wouldn't you let the time spent studying be the independent variable, x since
this is the controlled input ?

Answer 9

Actually, i made a mistake with graphing

Answer 10

Yes, you are right, i should have started with introducing the independent and the dependent variables.

Answer 11

well time is always the independent variable as nothing changes time so I agree it should be on the x axis. Also the change in time spent will create a change on the test grade. Not a change in the test grade will cause a change in the time spent.

Answer 12

@sweetburger is correct

Answer 13

@Needhelpstudying Read the question carefully when it said:
"The table represents data collected on the time spent studying (in minutes) and the resulting test grade."
What is your independent and dependent variable? My graph was incorrect.

Answer 14

The independent variable would be the time spent studying, the resulting test grade would be dependent variable

Answer 15

Yes, independent variable is the input and the dependent variable is the output (result).
Input is x and output is y. Please show a graph where it indicates the time and grade on test.

Answer 16

Next, you plot all the points given.

Answer 17

K

Answer 18

@Zela101 Can you type the numbers of the graph please? It's way too messy when I try to do it

Answer 19

I just go by 20*x