(a)
To give an example of a way to choose a voluntary response sample of students and explain how this method could lead to bias.
(a)
Explanation of Solution
In this, the survey is conducted on the opinions about the parking lot from the students.
Since voluntary surveys are generally responded to only by those who feel strongly about the issue, these results will likely be biased. And also use the daily announcement for volunteers to come in at lunch to take the survey.
(b)
To give an example of a way to choose a convenience sample of students and explain how this method could lead to bias.
(b)
Explanation of Solution
In this, the survey is conducted on the opinions about the parking lot from the students.
For example, we could choose the first
This would then create bias because the first
(c)
To describe how to select an SRS of
(c)
Explanation of Solution
To select an SRS of
(d)
To explain how this method you described in part (c) avoids the biases you described in part (a) and (b).
(d)
Explanation of Solution
The method you described in part (c) avoids the biases you described in part (a) and (b) as in this method the students are selected at random so that the sample we collect represent the whole school. That is, the sample’s survey will describe the result of the whole school. In this way the result will not be biased and also it will be accurate.
Chapter 4 Solutions
PRACTICE OF STATISTICS F/AP EXAM
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