Chapter 12, Problem 12P

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

The following values are from an independent-measures study comparing three treatment conditions.

a. Compute the variance for each sample.

b. Compute *MS*_{within}, which would be the denominator of the *F*-ratio for an ANOVA. Because the samples are all the same size, you should find that *MS*_{within} is equal to the average of the three sample variances.

**a.**

To determine

**To identify:** The sample variance.

Explanation

**Given info:**

The results from an independent-measures study comparing three treatment conditions. Sample size is 10 for three treatment conditions.

**Calculation:**

For treatment 1

Let

Thus, the sample variance for treatment 1 is 7.

For treatment 2

Let

**b.**

To determine

**To Compute:** The

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Sect-12.5 P-2LCSect-12.6 P-1LCSect-12.6 P-2LCSect-12.7 P-1LCSect-12.7 P-2LCCh-12 P-1PCh-12 P-2PCh-12 P-3PCh-12 P-4PCh-12 P-5PCh-12 P-6PCh-12 P-7PCh-12 P-8PCh-12 P-9PCh-12 P-10PCh-12 P-11PCh-12 P-12PCh-12 P-13PCh-12 P-14PCh-12 P-15PCh-12 P-16PCh-12 P-17PCh-12 P-18PCh-12 P-19PCh-12 P-20PCh-12 P-21PCh-12 P-22PCh-12 P-23PCh-12 P-24P

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