Return all materials back to instructor. The exam is open book. Each question, u

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Return all materials back to instructor. The exam is open book. Each question, unless otherwise specified, has score of one · Questions 1. Degrees of freedom for the treatments (groups) in a one-way (factor) analysis of variance with n,-10, n,-8, n,-12 would be. a. 30 b. 3 c. 28 d. 2 In a one-way (factor) analysis of variance, the computed variance ratio (V.R.) would be zero when a. the data is skewed to left. b. there is no difference among groups. c. there is no difference within groups. d. Variance ratio will never be zero. 2 3. Analysis of variance (ANOVA) is applied to compare a. means of several groups (populations) b. variances of several groups (populations) c. proportions of several groups (populations) d. a & b . Which of the following is NOT a characteristic of the Fratio (F test) probability distribution? a. b. c. d. It is right-skewed. It describes the ratio of two variances. It is based on two sets of degrees of freedom It is negative when an inverse relationship exists.

Explanation / Answer

Solution:-

1) Degree of freedom for the treatments = 2

Total number of treatments = k = 3

D.FTreatments = k - 1

D.FTreatments = 3 - 1

D.FTreatments = 2

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