When a statistic is based on a sample, the sample should be:

Question

Quizplus · Accepted Answer

The sample should be random, meaning that each member of the population has an equal chance of being included in the sample. This helps ensure that the sample is representative of the entire population and avoids biases in the statistical analysis. The other options are incorrect: A is incorrect because the sample should be representative of the population, not made up of unusual members; B is incorrect because the sample size does not need to be 95% of the population; C is incorrect because the sample should be chosen randomly and not based on expectations of the statistical value; D is incorrect because the sample size should be large enough to be representative of the population, but not so small that it is not representative.

When a Statistic Is Based on a Sample, the Sample