# Common Population Variance Calculate the common population variance for the following data (to at least three places of decimals) - This has to be one answer for all of the data!!!! ...

Calculate the common population variance for the following data (to at least three places of decimals) - This has to be one answer for all of the data!!!!

The **mean** number of flowers per plant for Sample 1 = 6.44 and Sample 2 = 7.20

The **estimated population standard deviation** of number of flowers per plant Sample 1 = 1.51 and Sample 2 = 1.80

And **Sample size** for Sample 1 = 9 and Sample 2 = 20

Calculate S^2/c (the common population variance) for these data (to at least three places of decimals).

S^2/c = (This has to be one answer for all of the data!!!!)

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ANOVA: Mean squares and the common population variance

In an effort to counteract student cheating, the professor of a large

class created four versions of a midterm exam, distributing the four

versions among the 344 students in the class, so that each version was

given to 86 students. After the exam, the professor computed the

following information about the scores (the exam was worth 200 points):

Group sample size sample

mean sample varience

Version A 86

155.9 458.2

Version B 86 155.9

423.6

Version C 86

151.2 412.9

Version D 86

153.9 373.8