Exam 12: Sample Size Determination

The idea that a large number of sample means or proportions will approximate a normal distribution, regardless of the distribution of the population from which they were drawn, is known as:

(Multiple Choice)

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Question 41

Higher levels of confidence generally require:

(Multiple Choice)

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Question 42

A researcher wants to know the average number of times per month respondents eat at fast food restaurants. The statistic that s/he is most interested in would be the_________.

(Multiple Choice)

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Question 43

If we were making inferences from a single sample, we would expect that there would be a ____ percent probability that the sample mean or proportion generated from our sample results would be within two standard errors of the true population mean.

(Multiple Choice)

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Question 44

____________ is a range of values within which the true population value is estimated to fall.

(Multiple Choice)

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Question 45

When a researcher is not sure if people who responded to the survey are different from those who did not respond, this brings into question the issue of:

(Multiple Choice)

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Question 46

The assumptions that sample elements are drawn independently.

(Multiple Choice)

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Question 47

Which of the following is not a determinant of sample size for probability samples?

(Multiple Choice)

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Question 48

Budget is rarely a consideration when determining sample size.

(True/False)

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Question 49

A range of values with which the true population value is estimated to fall is known as the point estimate.

(True/False)

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Question 50

A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the past 30 days, with a tolerable sampling error (E) of 0.03 and a confidence level of 97.5%. If secondary data indicated that 25% of all adults had used the Internet for such a purpose, what is the sample size?

(Essay)

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Question 51

A researcher must be willing to allow for a certain amount of sampling error in any project.

(True/False)

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Question 52

How many respondents should be in each important subgroup of a sample?

(Multiple Choice)

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Question 53

If large enough samples are taken, most human behavior can be plotted using a normal distribution curve.

(True/False)

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Question 54

A confidence interval always includes the true population value.

(True/False)

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Question 55

A normal distribution has a total of 6 standard deviations.

(True/False)

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Question 56

Researchers can determine via statistical techniques sample size. However, these techniques can only be applied to which of the following types of sample?

(Multiple Choice)

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Question 57

The sample size is most often determined, indirectly by ___________________.

(Multiple Choice)

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Question 58

The reasons a potential client may specify a sample size is based on____________.

(Multiple Choice)

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Question 59

As the level of tolerable error increases in the sample means formula, the sample size required to represent a particular population is:

(Multiple Choice)

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Question 60

Showing 41 - 60 of 63

The idea that a large number of sample means or proportions will approximate a normal distribution, regardless of the distribution of the population from which they were drawn, is known as:

Higher levels of confidence generally require:

A researcher wants to know the average number of times per month respondents eat at fast food restaurants. The statistic that s/he is most interested in would be the_________.

If we were making inferences from a single sample, we would expect that there would be a ____ percent probability that the sample mean or proportion generated from our sample results would be within two standard errors of the true population mean.

____________ is a range of values within which the true population value is estimated to fall.

When a researcher is not sure if people who responded to the survey are different from those who did not respond, this brings into question the issue of:

The assumptions that sample elements are drawn independently.

Which of the following is not a determinant of sample size for probability samples?

Budget is rarely a consideration when determining sample size.

A range of values with which the true population value is estimated to fall is known as the point estimate.

A researcher must be willing to allow for a certain amount of sampling error in any project.

How many respondents should be in each important subgroup of a sample?

If large enough samples are taken, most human behavior can be plotted using a normal distribution curve.

A confidence interval always includes the true population value.

A normal distribution has a total of 6 standard deviations.

Researchers can determine via statistical techniques sample size. However, these techniques can only be applied to which of the following types of sample?

The sample size is most often determined, indirectly by ___________________.

The reasons a potential client may specify a sample size is based on____________.

As the level of tolerable error increases in the sample means formula, the sample size required to represent a particular population is:

Problem Definition and the Research Process

Secondary Data and Databases

Qualitative Research

Traditional Survey Research

Online Marketing Research

Primary Data Collection: Observation

Primary Data Collection: Experimentation and Test Markets

The Concept of Measurement and Attitude Scales

Questionnaire Design

Basic Sampling Issues

Data Processing, Data Analysis, and Statistical Testing

More Powerful Statistical Methods

Communicating Results and Managing Marketing Research

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