Midterm scores in a class have an average of 75 and an SD of 8. Final exam scores in the class have an average of 50 and an SD of 10. The correlation between the two variables is 0.63 and the scatter diagram is football shaped.

Students complain that the final was too hard, so the instructor gives each student 15 more points on the final.

Question

Midterm scores in a class have an average of 75 and an SD of 8. Final exam scores in the class have an average of 50 and an SD of 10. The correlation between the two variables is 0.63 and the scatter diagram is football shaped.

Students complain that the final was too hard, so the instructor gives each student 15 more points on the final.

anonymous · Answer

The correlation between the new final scores and the old final scores is:


-1
-0.63
0
0.63
1
impossible to determine based on the information given.
possible to determine based on the information given, and not equal to -1, -0.63, 0, 0.63 or 1.

anonymous · Answer

u r saying i should go for 4th option?

anonymous · Answer

wrong

anonymous · Answer

what is the correct answer?