The textbook authors conducted two studies on social networking sites. The first study was conducted in the spring semester on college freshmen and the second study was conducted in the fall semester on college freshmen.
The authors found that __________ was a nuisance variable.
a. major of participant
b. ethnicity of participant
c. academic classification
d. time of year
Question 2
Dave has asked participants in his study to identify which ethnic category fits them best. Dave is using a(n) scale.
a. ordinal
b. nominal
c. ratio
d. interval
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