# PSY-3301 Chapter 6 T/F Quiz (Set 4)

? Question 1 10 out of 10 points

If the value of r on ratio scaled raw data were 0.87 and the pairs of numbers were converted to ordinal data, and r calculated for the ordinal data, r would equal 0.87.

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? Question 2 10 out of 10 points

Pearson r requires that the data be of interval or ratio scaling.

? Question 3 10 out of 10 points

A scatter plot is used to help determine if the relationship is linear or curvilinear.

? Question 4 10 out of 10 points

Spearman rho really derives from Pearson r.

? Question 5 10 out of 10 points

The range of a correlation coefficient is 0 to +1.

? Question 6 10 out of 10 points

Rho is used where one or both variables are at least of interval scaling.

? Question 7 10 out of 10 points

In order to compute r, we must first convert each score to its z score and then do our calculations with the z scores.

? Question 8

10 out of 10 points

If one calculates r for a set of data and r equals 0.84, one can be certain that the relationship between the variables is not spurious.

? Question 9 10 out of 10 points

In a perfect positive correlation, each individual obtains the same z score on each variable.

? Question 10 10 out of 10 points

In a linear relationship all the points must fall on a straight line.