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?

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 1

d

Answer 2

thank you

Answer 3

no problem :)

Answer 4

This seems to be in the wrong section. Perhaps the Mathematics group would help better.