A.basic experimental designs
B.factorial experimental designs
C.hierarchical experimental designs
D.instrumental experimental designs
In an observation study, when ‘shopping time in a supermarket” is defined as: “Using a
stopwatch, start the stopwatch the moment the customer enters the store and stop the
stopwatch as soon as the customer is handed a receipt by the checkout clerk,” this is
best described as an example of a(n) _____.
A.nominal scale
B.equivalent-form scale
C.operational definition
D.test-retest method
_____ involves the investigation of the effects of one treatment variable on an
interval-scaled dependent variable and determines whether statistically significant
differences in means occur between two or more groups.
A.Analysis of variance (ANOVA)
B.Regression analysis
C.Cross-tabulation