A person who is not at home when an interviewer calls is called a(n) ____________________.
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Question 2People who are cannot be contacted or who refuse to participate in a survey are called ____________________.
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Question 3When the people who answer a mail survey are different in important ways (e.g., income level) from the people who did not answer the survey, the survey is said to have ____________________ error.
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Question 4When the results of a sample deviate in a significant way from the true value of the population mean, we say that the study has ____________________ bias.
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Question 5When a mistake in the implementation of the design of a research study is made, we say that the study has ____________________ error.
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Question 6Chance variations in sampling due to the elements included in the sample are called ____________________ error.
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Question 7When primary data are collected by asking respondents questions, these data are being obtained via a(n) ____________________.
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Question 8The person who answers questions in a mail survey is called a(n) ____________________.
Fill in the blank(s) with correct word
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