If r has a positive value, as one variable increases, the other variable _____.
a. increases c. first increases, then decreases
b. decreases d. shows no systematic change
Classifying subjects on the basis of sex is an example of using what kind of scale?
a. nominal
b. ordinal
c. interval
d. ratio
e. bathroom
In order to calculate a Pearson correlation coefficient, the data must be at least _____ in scaling.
a. nominal c. interval
b. ordinal d. ratio
Given the following set of numbers, X1 = 2, X2 = 4, X3 = 6, X4 = 10, what is the value of N?
a. 2 c. 6
b. 4 d. 10
The predictive between relationship two variables is perfect when r = _____.
a. +1.00 c. a and b
b. -1.00 d. 0.00
Given the following set of numbers, X1 = 2, X2 = 4, X3 = 6, X4 = 10, what is the value of X42?
a. 4 c. 100
b. 6 d. 10
Correlations are considered to be _____ statistics.
a. problematic c. complicated
b. inferential d. descriptive
The sum of a distribution of 40 scores is 150 . If we add a constant of 5 to each score, the resulting sum will be _________.
a. 158 c. 150
b. 350 d. 195
The symbol for the Pearson product moment correlation coefficient is _____.
a. r c. C
b. PPMC d. XY
In the race mentioned in question 26, a comparison of each runner's finishing time would represent a(n) _________.
a. nominal scale c. interval scale
b. ratio scale d. ordinal scale
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