Chapter 7, Section 2, Exercise 034 Give the degrees of freedom for the chi-squar

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Chapter 7, Section 2, Exercise 034

Give the degrees of freedom for the chi-square test based on the two-way table.

exact number, no tolerance

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Chapter 8, Section 2, Exercise 034

Consider the data with analysis shown in the following computer output:

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Chapter 7, Section 2, Exercise 034

Give the degrees of freedom for the chi-square test based on the two-way table.

Yes No Total Group 1 Group 2 Group 3 Total

Degrees of freedom

exact number, no tolerance

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Chapter 8, Section 2, Exercise 034

Consider the data with analysis shown in the following computer output:

Level N Mean StDev A B C

Source DF SS MS F P Groups Error Total

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.

The pooled standard deviation is .

degrees of freedom

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Explanation / Answer

Chapter 7, Section 2, Exercise 034

(a) Degrees of freedom for Chi - square test = (Number of groups - 1) * ( Categorical variables -1)

dF = ( 3-1) * (2-1) = 2

Chapter 8, Section 2, Exercise 034

What is the pooled standard deviation

Pooled Standard Deviation = sqrt of MSerror = sqrt ( 5.39) = 2.32

Degree of freedom = ( 3-1) + 3* (5-1) = 2+ 12 = 14

Pooled Standard Deviation = 2.32

Degree of freedom = 14

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