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Chapter 8: Q. 13 (page 482)

The news article goes on to say: 鈥淭he theoretical errors do not take into account a margin of additional error resulting from the various practical difficulties in taking any survey of public opinion.鈥� List some of the 鈥減ractical difficulties鈥� that may cause errors in addition to the 卤3percentage point margin of error. Pay particular attention to the news article鈥檚 description of the sampling method.

Short Answer

Expert verified

The practical difficulty is " Nonresponse bias is the result of not having data for everybody in the sample ".

Step by step solution

01

Given Information

The theoretical errors do not take into account a margin of additional error resulting from the various practical difficulties in taking any survey of public opinion.

02

Explanation

Some of the practical difficulties:

Selection bias will exclude part of the population

Measurement of response bias will use a method that gives different values from the true value

Nonresponse bias is the result of not having data for everybody in the sample.

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