Question

Increasing the sample size of an opinion poll will

(a) reduce the bias of the poll result.

(b) reduce the variability of the poll result.

(c) reduce the effect of nonresponse on the poll.

(d) reduce the variability of opinions.

(e) all of the above.

Short answer

A correct answer is an option (b) to reduce the variability of opinions.

Step-by-step solution

Given Information

Increasing the sample size of an opinion poll.

Explanation

A larger sample size results in more information about the population and thus better estimates of the population.

If we have better estimates of the population, then we also know that there is less variability.