Quota Samples Are Typically Selected So That the Distribution of a Characteristic

question 66

Multiple Choice

Quota samples are typically selected so that the distribution of a characteristic in the sample matches the distribution of that same characteristic in the population.With respect to the representativeness of quota samples,it can thus be said that

• A)a quota sample may be very far off the mark with respect to other important characteristics likely to influence the result but which were not used as controls when selecting the sample.
• B)the fact that the distribution of the characteristic in the sample parallels the distribution in the population does not guarantee that the sample is representative.
• C)the quota assigned each field worker should exactly mirror the distribution of the control characteristic in the population.
• D)Both a and b.
• E)a,b,and c.

Define and understand the concept of interval estimates, including confidence intervals and margin of error.

Analyze how changes in confidence levels affect the width of confidence intervals.

Choose the appropriate z or t value for confidence interval estimation based on sample size and available data.

Understand the impact of sample size on margin of error in interval estimation.

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Definitions:

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