Using the data below in Figure 1: For which cases did you need to assume population standard deviations equal? Did the assumption seem tenable in these cases? Suppose you were unwilling to assume equal population standard deviations. How would your results change?
Using the data below in Figure 1: For which cases did you need to assume population standard deviations equal? Did the assumption seem tenable in these cases? Suppose you were unwilling to assume equal population standard deviations. How would your results change?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
Related questions
Question
Using the data below in Figure 1:
- For which cases did you need to assume population standard deviations equal? Did the assumption seem tenable in these cases?
- Suppose you were unwilling to assume equal population standard deviations. How would your results change?
Figure 1:
ID | Ed | Exp | Type | Female | Salary |
19 | 17 | 43 | 3 | 0 | 65.0 |
20 | 11 | 43 | 2 | 0 | 48.7 |
25 | 15 | 42 | 3 | 1 | 58.0 |
30 | 14 | 40 | 3 | 1 | 49.9 |
34 | 15 | 39 | 2 | 1 | 54.0 |
42 | 10 | 39 | 1 | 0 | 40.9 |
46 | 11 | 36 | 1 | 0 | 45.2 |
52 | 10 | 34 | 1 | 0 | 41.6 |
59 | 12 | 34 | 3 | 0 | 45.4 |
69 | 13 | 34 | 1 | 1 | 48.8 |
74 | 13 | 33 | 1 | 0 | 48.4 |
82 | 14 | 31 | 3 | 0 | 49.8 |
87 | 12 | 31 | 2 | 0 | 45.1 |
92 | 14 | 30 | 1 | 0 | 45.3 |
99 | 18 | 28 | 2 | 1 | 53.7 |
105 | 11 | 28 | 2 | 0 | 40.5 |
107 | 17 | 26 | 3 | 1 | 54.9 |
110 | 15 | 26 | 1 | 0 | 49.8 |
115 | 17 | 25 | 3 | 0 | 54.4 |
117 | 11 | 25 | 1 | 0 | 38.9 |
121 | 10 | 25 | 2 | 0 | 37.2 |
130 | 17 | 24 | 1 | 0 | 54.1 |
139 | 16 | 23 | 1 | 0 | 51.1 |
140 | 16 | 23 | 1 | 1 | 49.1 |
141 | 16 | 23 | 1 | 0 | 51.0 |
149 | 10 | 21 | 2 | 1 | 31.7 |
156 | 16 | 20 | 1 | 0 | 49.6 |
164 | 11 | 19 | 1 | 0 | 36.3 |
168 | 15 | 19 | 1 | 0 | 46.3 |
173 | 17 | 16 | 2 | 1 | 48.7 |
182 | 10 | 13 | 2 | 1 | 27.7 |
191 | 16 | 13 | 3 | 0 | 46.1 |
194 | 18 | 12 | 1 | 0 | 50.4 |
199 | 11 | 12 | 2 | 0 | 33.2 |
208 | 15 | 11 | 3 | 1 | 38.3 |
217 | 15 | 9 | 1 | 0 | 41.3 |
226 | 13 | 9 | 2 | 0 | 36.4 |
234 | 14 | 9 | 3 | 0 | 38.9 |
239 | 13 | 6 | 1 | 1 | 34.4 |
240 | 12 | 5 | 1 | 0 | 32.2 |
246 | 12 | 3 | 2 | 1 | 26.8 |
249 | 11 | 3 | 1 | 1 | 24.0 |
258 | 14 | 3 | 2 | 1 | 32.2 |
267 | 15 | 2 | 1 | 1 | 34.8 |
270 | 13 | 2 | 1 | 0 | 33.2 |
277 | 12 | 2 | 1 | 0 | 30.4 |
286 | 10 | 1 | 1 | 1 | 25.1 |
290 | 12 | 1 | 2 | 0 | 29.9 |
291 | 14 | 1 | 2 | 1 | 32.2 |
292 | 13 | 1 | 1 | 0 | 32.4 |
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