Correlation

Question 0

If the product movement correlation is closest to 1…

Answer 0

There is a positive correlation

Question 1

For correlation you are given most formulas

Answer 1

It’s just about inputting the values into these

Question 2

If the product movement correlation is 0…

Answer 2

There is no correlation.

Question 3

If the product movement correlation is closest to -1…

Answer 3

There is a negative correlation

Question 4

Is the product movement correlation r affected by coding?

Answer 4

No

Question 5

How do we code when the numbers are large?

Answer 5

Re-write variables, choosing your own a, b, c and d:
x-a y-c
p = —– and q = —–
b d