What Are the Two Main Functions of the Introduction to a Survey

question 18

Multiple Choice

What are the two main functions of the introduction to a survey questionnaire?

• A) to encourage participation and establish informed consent
• B) to establish the legitimacy of the survey and put respondents at ease
• C) to inform the respondents of their rights and protect the researcher from lawsuits
• D) to hide the true purpose of the survey and to establish rapport with respondents

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Definitions:

Confidence Interval

A span of values, taken from sample statistics, seen as likely to encase the value of an unidentified population parameter.

Confidence Level

The probability, expressed as a percentage, that a parameter lies within a specified range of values (confidence interval).

Population Mean

The average value of a property in a population.

Confidence Interval

A range of values, derived from the sample data, that is likely to contain the value of an unknown population parameter, with a certain degree of confidence.