Question 1

If the sample mean of a continuous variable is 120 and the standard deviation is 5, where would 99% of the data fall? (Assume normal distribution)

Accepted Answer

A)  110.2 - 129.8 
B)  107.1 - 132.9 
C)  148.4 - 187.6 
D)  Cannot say. 
A)  110.2 - 129.8 
B)  107.1 - 132.9 
C)  148.4 - 187.6 
D)  Cannot say. B

Question 2

Web-surveys may not always be the best option because:

Accepted Answer

A)  there is still a significant minority of the population who do not have access to the Internet. 
B)  there is no list of Internet users that can be used to draw random samples. 
C)  the quality of data obtained can be lower in the absence of an interviewer. 
D)  All of these. 
A)  there is still a significant minority of the population who do not have access to the Internet. 
B)  there is no list of Internet users that can be used to draw random samples. 
C)  the quality of data obtained can be lower in the absence of an interviewer. 
D)  All of these. D

Question 3

A researcher wishes to study the correlation of divorce and IQ levels of emerging adults. She randomly samples students from Oxford University where she teaches. What could be a possible problem with her sample?

Accepted Answer

A)  Oxford University students may not have the time to complete the survey. 
B)  The sample is not representative of the population of emerging adults in terms of IQ, learning ability, social status, etc. 
C)  Her sample may be too small since the parents of Oxford University students do not get divorced. 
D)  There is no problem with her sample. 
A)  Oxford University students may not have the time to complete the survey. 
B)  The sample is not representative of the population of emerging adults in terms of IQ, learning ability, social status, etc. 
C)  Her sample may be too small since the parents of Oxford University students do not get divorced. 
D)  There is no problem with her sample. B

Question 4

Quota sampling divides the sample up into separate sub-groups and then selects random samples from within each group.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following statements is true?

Accepted Answer

A)  Standard deviation is a measure of dispersion from the mean. 
B)  Design effects are unaffected by the cluster homogeneity. 
C)  CATI surveys are longer than personal interview surveys. 
D)  None of these. 
A)  Standard deviation is a measure of dispersion from the mean. 
B)  Design effects are unaffected by the cluster homogeneity. 
C)  CATI surveys are longer than personal interview surveys. 
D)  None of these.

Question 6

A researcher should be particularly worried about non-response bias when:

Accepted Answer

A)  there is non-response to the survey. 
B)  the sample is very large. 
C)  the sample is very small. 
D)  the design effect is large. 
A)  there is non-response to the survey. 
B)  the sample is very large. 
C)  the sample is very small. 
D)  the design effect is large.

Question 7

The difference in the precision of an estimate produced by a complex design and that by a simple random sample is referred to as the design effect.

Accepted Answer

A) True 
 B)False

Question 8

If the standard deviation of a sample of 1000 individuals is 10, then the standard error of the mean is:

Accepted Answer

A)  10. 
B)  .01. 
C)  100. 
D)  None of these. 
A)  10. 
B)  .01. 
C)  100. 
D)  None of these.

Question 9

Even when the distribution of the variable in the population is not normal, the sampling distribution becomes more and more similar to the normal distribution as:

Accepted Answer

A)  the sample size increases. 
B)  the sampling technique is changed. 
C)  the sample size decreases. 
D)  the standard deviation increases. 
A)  the sample size increases. 
B)  the sampling technique is changed. 
C)  the sample size decreases. 
D)  the standard deviation increases.

Question 10

The precision of an estimate is affected by three factors:

Accepted Answer

A)  population variance, sampling technique, and sample standard deviation. 
B)  sample size, population variance, and location of participants. 
C)  population variance, sampling technique, and sample size. 
D)  population mean, population standard deviation, and population variance. 
A)  population variance, sampling technique, and sample standard deviation. 
B)  sample size, population variance, and location of participants. 
C)  population variance, sampling technique, and sample size. 
D)  population mean, population standard deviation, and population variance.

Question 11

In a Quota sampling of 100 individuals, if we know that there are 80% computer-users in our population, we would set quotas of:

Accepted Answer

A)  80 computer-users and 20 non-users. 
B)  20 computer-users and 80 non-users. 
C)  50 computer-users and 50 non-users. 
D)  None of these. 
A)  80 computer-users and 20 non-users. 
B)  20 computer-users and 80 non-users. 
C)  50 computer-users and 50 non-users. 
D)  None of these.

Question 12

A simple random sample (SRS) gives every unit in the population an equal probability of selection.

Accepted Answer

A) True 
 B)False

Question 13

The idea behind sampling is to:

Accepted Answer

A)  obtain a sample of manageable size. 
B)  make inferences from a sample to a population. 
C)  understand the properties of specific sample drawn. 
D)  All of these. 
A)  obtain a sample of manageable size. 
B)  make inferences from a sample to a population. 
C)  understand the properties of specific sample drawn. 
D)  All of these.

Question 14

A deft value of 3 indicates:

Accepted Answer

A)  that the standard error is three times as large as it would have been had the design had been a simple random sample. 
B)  that the standard error is 1.5 as large as it would have been had the design been a simple random sample. 
C)  that the standard error is one-third times as it would have been had the design been a simple random sample. 
D)  None of these. 
A)  that the standard error is three times as large as it would have been had the design had been a simple random sample. 
B)  that the standard error is 1.5 as large as it would have been had the design been a simple random sample. 
C)  that the standard error is one-third times as it would have been had the design been a simple random sample. 
D)  None of these.

Question 15

A researcher finds that his data are normally distributed around a mean of 168. Is he right in assuming that 95% of his sample cases will be within the range 148.4 to 187.6?

Accepted Answer

A)  Yes 
B)  No 
C)  Depends on the nature of the experiment 
D)  Can't say. Need more information 
A)  Yes 
B)  No 
C)  Depends on the nature of the experiment 
D)  Can't say. Need more information

Question 16

Unit non-response is when:

Accepted Answer

A)  only one of the respondents failed to complete the survey. 
B)  no information was obtained from one or more of the sample units. 
C)  one of the items in the survey was not completed. 
D)  All of these. 
A)  only one of the respondents failed to complete the survey. 
B)  no information was obtained from one or more of the sample units. 
C)  one of the items in the survey was not completed. 
D)  All of these.

Question 17

The response rate is calculated by dividing the number of achieved interviews by the eligible issued sample size.

Accepted Answer

A) True 
 B)False

Question 18

If rho= .10 and n= 120. Calculate the design effect (deff).

Accepted Answer

A)  11.9 
B)  12.9 
C)  13.9 
D)  14.9 
A)  11.9 
B)  12.9 
C)  13.9 
D)  14.9

Question 19

Structured questionnaires are the most common form of data collection for surveys.

Accepted Answer

A) True 
 B)False

Question 20

Sampling distribution tells us:

Accepted Answer

A)  the probability of obtaining a particular value of a statistic in one sample. 
B)  the distribution of values on a particular variable in a particular sample. 
C)  the area distribution of the sample in a particular city. 
D)  None of these. 
A)  the probability of obtaining a particular value of a statistic in one sample. 
B)  the distribution of values on a particular variable in a particular sample. 
C)  the area distribution of the sample in a particular city. 
D)  None of these.

If the sample mean of a continuous variable is 120 and the standard deviation is 5, where would 99% of the data fall? (Assume normal distribution)

Web-surveys may not always be the best option because:

A researcher wishes to study the correlation of divorce and IQ levels of emerging adults. She randomly samples students from Oxford University where she teaches. What could be a possible problem with her sample?

Quota sampling divides the sample up into separate sub-groups and then selects random samples from within each group.

Which of the following statements is true?

A researcher should be particularly worried about non-response bias when:

The difference in the precision of an estimate produced by a complex design and that by a simple random sample is referred to as the design effect.

If the standard deviation of a sample of 1000 individuals is 10, then the standard error of the mean is:

Even when the distribution of the variable in the population is not normal, the sampling distribution becomes more and more similar to the normal distribution as:

The precision of an estimate is affected by three factors:

In a Quota sampling of 100 individuals, if we know that there are 80% computer-users in our population, we would set quotas of:

A simple random sample (SRS) gives every unit in the population an equal probability of selection.

The idea behind sampling is to:

A deft value of 3 indicates:

A researcher finds that his data are normally distributed around a mean of 168. Is he right in assuming that 95% of his sample cases will be within the range 148.4 to 187.6?

Unit non-response is when:

The response rate is calculated by dividing the number of achieved interviews by the eligible issued sample size.

If rho= .10 and n= 120. Calculate the design effect (deff).

Structured questionnaires are the most common form of data collection for surveys.

Sampling distribution tells us:

Research Questions, Design, Strategy and Choice of Methods

Ethics

Big Questions and New Methods

Capturing and Recording Information

Telling Others About Your Research

Psychology As a Science: What Is Science

Accessing Difficult to Access Information

Quasi-Experimental Designs Including Obervational Methods

Experimental Design

Interviewing and Focus Groups

Descriptive Statistics: Graphical and Numerical Methods

Content Analysis, Thematic Analysis and Discourse Analysis

Self-Report Data

Questionnaire Design

Inferential Statistics

Factorial Anova

Correlation and Regression

Creating Latent Variables

Filters

Exam 15: Surveys and Sampling

If the sample mean of a continuous variable is 120 and the standard deviation is 5, where would 99% of the data fall? (Assume normal distribution)

Web-surveys may not always be the best option because:

A researcher wishes to study the correlation of divorce and IQ levels of emerging adults. She randomly samples students from Oxford University where she teaches. What could be a possible problem with her sample?

Quota sampling divides the sample up into separate sub-groups and then selects random samples from within each group.

Which of the following statements is true?

A researcher should be particularly worried about non-response bias when:

The difference in the precision of an estimate produced by a complex design and that by a simple random sample is referred to as the design effect.

If the standard deviation of a sample of 1000 individuals is 10, then the standard error of the mean is:

Even when the distribution of the variable in the population is not normal, the sampling distribution becomes more and more similar to the normal distribution as:

The precision of an estimate is affected by three factors:

In a Quota sampling of 100 individuals, if we know that there are 80% computer-users in our population, we would set quotas of:

A simple random sample (SRS) gives every unit in the population an equal probability of selection.

The idea behind sampling is to:

A deft value of 3 indicates:

A researcher finds that his data are normally distributed around a mean of 168. Is he right in assuming that 95% of his sample cases will be within the range 148.4 to 187.6?

Unit non-response is when:

The response rate is calculated by dividing the number of achieved interviews by the eligible issued sample size.

If rho= .10 and n= 120. Calculate the design effect (deff).

Structured questionnaires are the most common form of data collection for surveys.

Sampling distribution tells us:

Research Questions, Design, Strategy and Choice of Methods

Ethics

Big Questions and New Methods

Capturing and Recording Information

Telling Others About Your Research

Psychology As a Science: What Is Science

Accessing Difficult to Access Information

Quasi-Experimental Designs Including Obervational Methods

Experimental Design

Interviewing and Focus Groups

Descriptive Statistics: Graphical and Numerical Methods

Content Analysis, Thematic Analysis and Discourse Analysis

Self-Report Data

Questionnaire Design

Inferential Statistics

Factorial Anova

Correlation and Regression

Creating Latent Variables

Filters