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Chapter 1: Q.70 (page 54)

With your classmates, brainstorm some ways you could overcome these problems if you needed to conduct a phone or mail survey.

Short Answer

Expert verified

1. To find out who is answering from the other side, ask the respondents for any government-issued photo ID to verify their identification.

2. To ensure that all emails are replied, the interviewer must send reminders to respondents to remind them to respond to the email, and the interviewer must also phone respondents at various times if the call is unanswered.

3. To ensure that no one is left out of the survey, the interviewer should create a spreadsheet with the details of the respondents, including which respondents have entered their responses and which respondents have yet to be questioned.

Step by step solution

01

To determine

In a phone or mail survey, the techniques for resolving difficulties are discussed.

02

Explanation

The approaches listed below may assist you in overcoming the challenges of conducting a phone or postal survey:

Only then will this strategy be useful if the list of phone numbers or email addresses is complete and includes all of the subjects in the population.

People who do not answer the phone should be contacted at various times when they are at home to receive the call, and mail reminders sent on weekends may receive a positive response.

To overcome interpretation concerns, simple questions must be asked using suitable wording and phrasing so that the question's objective is obvious.

To solve interpretation concerns, ensure that simple inquiries are asked using proper wording and phrasing so that the question's intent is obvious.

The options in a closed ended question must allow the respondent to provide the response of their choice.

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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.

statistic

Sixty adults with gum disease were asked the number of times per week they used to floss before their diagnosis. The (incomplete) results are shown in Table 1.34.

a. Fill in the blanks in Table1.34.

b. What percent of adults flossed six times per week?

c. What percent flossed at most three times per week?

In advance of the 1936Presidential Election, a magazine titled Literary Digest released the results of an opinion poll predicting that the republican candidate Alf Landon would win by a large margin. The magazine sent post cards to approximately 10,000,000prospective voters. These prospective voters were selected from the subscription list of the magazine, from automobile registration lists, from phone lists, and from club membership lists. Approximately 2,300,000people returned the postcards.

a. Think about the state of the United States in 1936. Explain why a sample chosen from magazine subscription lists, automobile registration lists, phone books, and club membership lists was not representative of the population of the United States at that time.

b. What effect does the low response rate have on the reliability of the sample?

c. Are these problems examples of sampling error or non sampling error?

d. During the same year, George Gallup conducted his own poll of 30,000prospective voters. These researchers used a method they called "quota sampling" to obtain survey answers from specific subsets of the population. Quota sampling is an example of which sampling method described in this module?

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.

53. number of tickets sold to a concert.

Determine what the key terms refer to in the following study. We want to know the average (mean) amount of money spent on school uniforms each year by families with children at Knoll Academy. We randomly survey 100 families with children in the school. Three of the families spent \(65, \)75, and $95, respectively.
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