Q.21 - The Practice of Statistics for AP

Question

A newspaper poll reported that $73\%$ of respondents liked business tycoon Donald Trump. The number $73\%$ is

(a) a population. 

(b) a parameter. 

(c) a sample. 

(d) a statistic. 

(e) an unbiased estimator. 

Step-by-Step Solution

Answer

$73\%$ is a descriptive measure that results from a sample.

Therefore, the correct answer is option (d).

Step 1: Given Information

A newspaper poll reported that $73\%$ of respondents liked business tycoon Donald Trump. 

Step 2: Explanation

The population is the individuals that are being studied.

A sample is the part of the population from which information was actually collected.

A parameter is a descriptive measure for a population, while a statistic is a descriptive measure for a sample.

An unbiased estimator is an estimator whose average of all possible values is equal to the corresponding parameter.

Statistic

since $73\%$ is a descriptive measure that results from a sample.