Correlation

Question 1

Indirect/negative correlation

Answer 1

As x increases, y decreases
As x decreases, y increases
Correlation coefficient value -1.00 - 0.00

Question 2

Very strong correlation

Answer 2

Greater than +/- .8

Question 3

Strong correlation

Answer 3

Between +/-.6 - +/-.8

Question 4

Moderate correlation

Answer 4

Between +/-.4 - +/-.6

Question 5

Weak correlation

Answer 5

Between +/-.2 - +/-.4

Question 6

Very weak correlation

Answer 6

Less than +/-.2

Question 7

Correlation determination r^2

Answer 7

Obtained by squaring correlation coefficient

* percentage of variance in one variable that can be accounted for by variance of the other variable.

Question 8

Scatter plot

Answer 8

• helps compare two variables

* each point on graph represents a case by the associated values for the two relevant variables

Question 9

Direct/positive Correlation

Answer 9

As x increases, y increases
As c decreases, y decreases
Correlation coefficient value 0.00-1.00