What is the pooled standard deviation? What degrees of freedom are used in doing inferences for these

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What is the pooled standard deviation? What degrees of freedom are used in doing inferences for these means and differences in means?


Refer to the data with analysis shown in the following computer output:

Level N Mean StDev 10.200 2.864 2.168 5 16.800 5 10.800 2.387 Source DF SS MS Groups 2 133.20 66.60 10.74 0.002 Error 12

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Statistics Unlocking The Power Of Data

ISBN: 9780470601877

1st Edition

Authors: Robin H. Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F. Lock, Dennis F. Lock

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