Unformatted text preview: Question 40
U points out of 4
Which of the following is fare) important in designing an experiment?
I. Control of all variables that might have an influence on the response variable.
Il. Randomization of subjects to treatment groups.
Ill. Use of a large number of subjects to comarel for small-sample variability.
a I only.
h. ll only.
a I and il only. X
d. li and ill only.
e. I, Il, and Ill.
The correct answer is: I, I, and II.
4 points out of 4
Archaeologists plan to examine a sample of 2-meter-square plots near an ancient Greek city
for artifacts in the ground. They choose separate samples of plots from floodplain, coast,
foothill, and high hills. The archaeologists is using
a a duster sample.
h. a systemack sample.
c. a simple random sample
d. a stratified random sample.
The correct snower is: a strath ed random sample....
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- Fall '14