Large samples are not much more accurate than small samples. A sample of a few thousand-even one thousand-is capable of reflecting the opinions of 1 million or 100 million voters fairly accurately. For example, a random sample of one thousand voters across the United States can produce a sampling error (plus or minus) of
A) 95 percent.
B) 85 percent.
C) 3 percent.
D) 6 percent.

Question

Quizplus · Accepted Answer

A random sample of one thousand voters across the US can produce a sampling error of plus or minus 3 percent, meaning that the results of the sample should be within 3 percentage points of the actual results for the entire population with 95 percent confidence. Therefore, Choice C is the correct answer.

Large Samples Are Not Much More Accurate Than Small Samples