Calculate the expected frequency corresponding to a Grade 3 academic with a high level of absenteeism.
Calculate the expected frequency corresponding to a Grade 3 academic with a high level of absenteeism.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 30PPS
Related questions
Question
A Deputy Registrar at a certainty university conducted a Chi-Square test of association to establish whether or not employee grade and level of absenteeism were associated. Table 2 below shows part of the results which were obtained.
Table 2: Cross tabulation of employee grade and level of absenteeism
|
|||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Grade |
|||||||||||
LAbsence |
|
1 |
2 |
3 |
Total |
||||||
low |
Observed |
8 |
1 |
0 |
9 |
||||||
|
Expected |
2.90 |
3.48 |
2.61 |
9.00 |
||||||
high |
Observed |
2 |
11 |
9 |
22 |
||||||
|
Expected |
7.10 |
8.52 |
6.39 |
22.00 |
||||||
Total |
Observed |
10 |
12 |
9 |
31 |
||||||
|
Expected |
10.00 |
12.00 |
9.00 |
31.00 |
||||||
2.3 Calculate the expected frequency corresponding to a Grade 3 academic with a high level of absenteeism.
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