. In comparison to simple random sampling, proportional stratified random sampling tends to be:
a. A little more efficient
b. A little less efficient
c. Just as efficient
d. Efficiency is unrelated to sampling techniques
Ans: a
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Of the following, which is likely to appeal to the smallest number of students?
a) working independently and quietly for long periods. b) having a teacher who is interpersonally skilled. c) being given work that is somewhat challenging but very interesting. d) receiving feedback about how to improve their learning and behavior.
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