What is the pooled standard deviation? What degrees of freedom are used in doing inferences for these means and differences in means? Round your answer for the pooled standard deviation to two decimal places. Consider the data with analysis shown in the following computer output: Level N Mean StDev A 5 86.950 5.002 B 5 76.167 6.555 C 7 80.000 9.230 D 7 69.333 6.154
What is the pooled standard deviation? What degrees of freedom are used in doing inferences for these means and differences in means? Round your answer for the pooled standard deviation to two decimal places. Consider the data with analysis shown in the following computer output: Level N Mean StDev A 5 86.950 5.002 B 5 76.167 6.555 C 7 80.000 9.230 D 7 69.333 6.154
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Question
What is the pooled standard deviation? What degrees of freedom are used in doing inferences for these means and differences in means?
Round your answer for the pooled standard deviation to two decimal places.
Consider the data with analysis shown in the following computer output:
| Level | N | Mean | StDev |
|---|---|---|---|
| A | 5 | 86.950 | 5.002 |
| B | 5 | 76.167 | 6.555 |
| C | 7 | 80.000 | 9.230 |
| D | 7 | 69.333 | 6.154 |
| Source | DF | SS | MS | F | P |
|---|---|---|---|---|---|
| Groups | 3 | 973.93 | 324.64 | 6.43 | 0.003 |
| Error | 20 | 1010.34 | 50.52 | ||
| Total | 23 | 1984.27 |
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