Concept explainers
(a)
To analyse: The telephone directory involves sampling or non-sampling error.
(a)
Answer to Problem 3.1CYU
The telephone directory is labelled as sampling error.
Explanation of Solution
Given information:
The telephone directory is used as a sampling frame.
Sampling error is the error caused by observing a sample instead of the whole population.
Sampling error is any difference that exists between a statistic and its corresponding parameter. In other words, it is a statistical error occurs when the sample does not represent the entire population.
(a)
The telephone directory is used as a sampling frame:
The whole telephone directory is chosen as sampling frame. This is an example of sampling error because it is related to how the sample is being chosen.
Conclusion:
This is an example of sampling error because it is related to how the sample is being chosen.
(b)
To analyse: The person cannot be contacted in five calls comes under sampling or non-sampling error.
(b)
Answer to Problem 3.1CYU
The person cannot be contacted in five calls is labelled under non-sampling error.
Explanation of Solution
Given information:
The person cannot be contacted in five calls.
The person cannot be contacted in five calls:
This is an example of non-sampling error because it is related to the collection of data and has nothing to do with the design of the survey.
Conclusion:
It is related to the collection of data and has nothing to do with the design of the survey.
(c)
To analyse: The Interviewers choose people walking by on the sidewalk to interview comes under sampling or non-sampling error.
(c)
Answer to Problem 3.1CYU
The Interviewers choose people walking by on the sidewalk to interview is labelled under sampling error.
Explanation of Solution
Given information:
Interviewers choose people walking by on the sidewalk to interview.
Interviewers choose people walking by on the sidewalk to interview:
This is an example of sampling error because it is related to how the sample is being conducted. Here, the sample is people on the street not a selected few people.
Conclusion:
The sample is people on the street not a selected few people.
Chapter 4 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Basic Business Statistics, Student Value Edition
Elementary Statistics
Intro Stats, Books a la Carte Edition (5th Edition)
Introductory Statistics (10th Edition)
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