and answers 2026\2027 A+ Grade
Which of the following is a qualitative variable?
a. Weight in kilograms
b. # of days w/o precipitation
c. ethnicity
d. avg daily temperature
- correct answer ethnicity
In an experiment on the effect of sleep on memory, the independent variable is..
a. number of hours of sleep
b. recall score on a memory test
c. gender of the subjects
d. gender of the experimenter
- correct answer number of hours of sleep (what is being manipulated)
A discrete variable is
a. one that can take on any value in a certain range
b. one that can only take on a finite number of values
- correct answer one that can only take on a finite number of values
Identify the scale of measurement for the following military hierarchy: lieutenant, captain, major
a. interval
b. nominal
c. ratio