Question

sampling

• a random sample is a part of a ____ that is representative of the whole.
• a sample is ____ if it does not favor one group or part of the population. an unbiased sample may be used to make predictions about data.
• a sample is ____ if it favors one group or part of the population. a biased sample should not be used to make predictions about data.

Explanation:

1. For the first blank: A random sample is a part of a "population" that is representative of the whole. By definition, in sampling, a sample is a subset of the population, and a random sample aims to represent the entire population.
2. For the second blank: A sample is "unbiased" if it does not favor one group or part of the population. An unbiased sample is representative and doesn't introduce systematic error in favor of a subgroup.
3. For the third blank: A sample is "biased" if it favors one group or part of the population. A biased sample distorts the representation, so it's not suitable for making accurate predictions about the population.

Answer:

1. population
2. unbiased
3. biased