Question 1 10 out of 10 points
The easiest way to determine if a relationship is linear is to calculate the regression line.
? Question 2 10 out of 10 points
In an inverse relationship as one variable gets larger the other variable gets smaller.
? Question 3 0 out of 10 points
The correlation coefficient when N = 2 is meaningless.
? Question 4 10 out of 10 points
In a positive relationship as X increases, Y increases.
? Question 5 0 out of 10 points
Spearman rho really derives from Pearson r.
? Question 6 0 out of 10 points
If one calculates r for a set of numbers and then adds a constant to each value of one of the variables, the correlation will change.
? Question 7 0 out of 10 points
As the value of r increases, the proportion of variability of Y that is accounted for by X decreases.
? Question 8
10 out of 10 points
If scores are z scores and if r equals 1 then zX will always equal zY.
? Question 9 10 out of 10 points
The use of z scores allows comparisons between variables measured on different scales and units.
? Question 10 10 out of 10 points
A correlation coefficient expresses the direction but not the magnitude of a relationship.
