Question

The correlation coefficient for practicing violin and getting better grades in a group of people is 0.8. Analyze the following statement:

Playing violin causes students to get better grades.

Is this a reasonable conclusion?

Answer 1

Yes; students who play violin must necessarily get better grades

Yes; the correlation coefficient is above 0.5, so that implies causation

Answer 2

hello please help me

Answer 3

does not imply causation, it implies that there is an association

Answer 4

For example,
there is a positive association with the number of churches in a city and crime . it does not mean churches cause crimes (population is the third variable that causes both churches and crime to rise)

Answer 5

The statement is false. you do not have enough information to say that violin playing causes grades to be better. (its possible that violin players are already bright students, so they would get good grades even without violin playing. So an average student who plays violin will not necessarily increase his score)

Answer 6

to prove causation you need to do an experiment. Randomly pick a group of 100 kids, randomly assign 50 of them to violin classes, and the other 50 do not play violin (control group). then test them a few years later to see if there is a difference.

Answer 7

thts not a wnser choice

Answer 8

well , i shouldnt say the statement is false. its possible it is true, but there is not enough information to say that violin playing causes grades to improve on the basis of just the correlation being positive

Answer 9

can i get help with one more and ill medal you

Answer 10

so the answer is, it is not a reasonable conclusion (just based on that positive correlation)

Answer 11

A company is deciding whether or not to hire a new worker. The company must pay the worker hourly and cover a daily cost for insurance. The cost to pay an hourly worker for one day is represented by the function y = 8x + 25, where x is hours.

What is the y-intercept, and what does it represent?

8; it represents the hourly wage for the worker

8; it represents the cost for insurance

25; it represents the cost for insurance

25; it represents the hourly wage for the worker

Answer 12

what are the multiple choices

Answer 13

oh sorry

Answer 14

Yes; students who play violin must necessarily get better grades

Yes; the correlation coefficient is above 0.5, so that implies causation

No; playing violin and earning better grades are completely unrelated

No; even though there is a strong positive correlation, playing violin doesn't cause students to get better grades

Answer 15

i picked b

Answer 16

it is correct?

Answer 17

I would say d) , in my opinion

Answer 18

sorry thts wht i ment

Answer 19

i need help with on more

Answer 20

A company is deciding whether or not to hire a new worker. The company must pay the worker hourly and cover a daily cost for insurance. The cost to pay an hourly worker for one day is represented by the function y = 8x + 25, where x is hours.

What is the y-intercept, and what does it represent?

8; it represents the hourly wage for the worker

8; it represents the cost for insurance

25; it represents the cost for insurance

25; it represents the hourly wage for the work

Answer 21

one sec