2. Select a sample of size seven of variable B (GPA) from data (see inserted data) by taking every third individual beginning with student number 3. What sampling method was employed here? Is the sample drawn random or not? How many sample do you have? From your set of sample, how many male and female? Do you see a possible source of bias in taking the sample in this way?
2. Select a sample of size seven of variable B (GPA) from data (see inserted data) by taking every third individual beginning with student number 3. What sampling method was employed here? Is the sample drawn random or not? How many sample do you have? From your set of sample, how many male and female? Do you see a possible source of bias in taking the sample in this way?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Answer number 2 using the data on the second picture.
Transcribed Image Text:2. Select a sample of size seven of variable B (GPA) from data (see inserted data) by taking
every third individual beginning with student number 3. What sampling method was
employed here? Is the sample drawn random or not? How many sample do you have?
From your set of sample, how many male and female? Do you see a possible source of
bias in taking the sample in this way?
Transcribed Image Text:Data for question #2
Student
Variable
A
1
1
1.83
2
1
1.94
3
2
2.86
4
2.5
5
1
2.97
6.
1
3.11
7
1
2.39
8.
2.75
9.
2
1.16
10
3.75
11
2.42
12
2.66
13
1
3.50
14
1.46
15
1
3.01
16
2.50
17
1.34
18
1
2.29
19
3.60
20
2.21
21
1
3.0
22
1
2.75
23
1
1.09
24
1
2.72
25
2
3.40
26
3.25
27
1
4.0
28
1
2.0
29
1
3.10
30
1
2.90
Legend:
Variable A : Gender
1= Male
2 = Female
Variable B: GPA (Grade Point Average)
NN- 22
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