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Chapter 1: Q.69 (page 54)

List some practical difficulties involved in getting accurate results from a mailed survey.

Short Answer

Expert verified

The following are some of the practical problems in conducting a mailed survey:

1. It is impossible to determine who is responding to the mail.

2. It is not necessary for all emails to receive a response from respondents.

3. The interviewer may leave a few persons to send mail to.

Step by step solution

01

To determine

The challenges of collecting reliable results from a mailed survey in practise.

02

Explanation

The following are some of the challenges that can be encountered when conducting a mailed survey:

Coverage is insufficient: Not all members of the population have email addresses, or their addresses have changed and have not been updated, therefore they are unable to participate in the poll.

Non-response: Not everyone who receives the mail responds; in a face-to-face interview, individuals respond promptly and virtually always, but in the mail, people often disregard it.

Issues with interpretation: In some cases, survey questions contain various interpretations, and each responder may understand them differently, resulting in inaccurate replies.

Lack of alternatives: In some cases, multiple choice questions may not supply the option that the respondent seeks, forcing him to select only from the possibilities provided, resulting in an inaccurate picture of the survey.

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Most popular questions from this chapter

Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once they start the treatment. Two researchers each follow a different set of 40 patients with AIDS from the start of treatment until their deaths. The following data (in months) are collected.

Researcher A:

3; 4; 11; 15; 16; 17; 22; 44; 37; 16; 14; 24; 25; 15; 26; 27; 33; 29; 35; 44; 13; 21; 22; 10; 12; 8; 40; 32; 26; 27; 31; 34; 29; 17; 8; 24; 18; 47; 33; 34

Researcher B:

3; 14; 11; 5; 16; 17; 28; 41; 31; 18; 14; 14; 26; 25; 21; 22; 31; 2; 35; 44; 23; 21; 21; 16; 12; 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23; 42; 33; 29

Determine what the key terms refer to in the example for Researcher A.

population

For the following exercises, identify the type of data that would be used to describe a response (quantitative discrete, quantitative continuous, or qualitative), and give an example of the data.

number of competing computer spreadsheet software packages

List some practical difficulties involved in getting accurate results from a telephone survey.

Use the following information to answer the next seven exercises: Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once starting the treatment. Two researchers each follow a different set of 40 AIDS patients from the start of treatment until their deaths. The following data (in months) are collected.

Researcher A: 3; 4; 11; 15; 16; 17; 22; 44; 37; 16; 14; 24; 25; 15; 26; 27; 33; 29; 35; 44; 13; 21; 22; 10; 12; 8; 40; 32; 26; 27; 31; 34; 29; 17; 8; 24; 18; 47; 33; 34

Researcher B: 3; 14; 11; 5; 16; 17; 28; 41; 31; 18; 14; 14; 26; 25; 21; 22; 31; 2; 35; 44; 23; 21; 21; 16; 12; 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23; 42; 33; 29

Suggest at least two methods the researchers might use to gather random data.

For the following four exercises, determine the type of sampling used (simple random, stratified, systematic, cluster, or convenience).

A group of test subjects is divided into twelve groups; then four of the groups are chosen at random.
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