Score: /6 Attempts: 9. Gravetter/Wallnau/Forzano, Essentials - Chapter 12 - End-

Question

Score: /6 Attempts: 9. Gravetter/Wallnau/Forzano, Essentials - Chapter 12 - End-of-chapter question 18 A researcher used ANOVA and computed F-4.25 for the following data. Aa Aa E Treatments n 10n 10n10 M 20 M 28 M 35 SS= 1005 SS= 1391 SS= 1180 If the mean for treatment III were changed to M = 25, what would happen to the size of the F-ratio (increase or decrease)? Explain your answer. The F-ratio would increasebecause increasing the size of the mean differences would increase MS between If the SS for treatment I were changed to SS 1400, what would happen to the size of the F-ratio (increase or decrease)? Explain your answer. The F-ratio would because the variability within treatments would

Explanation / Answer

THE F RATIO WOULD INCREASE BECAUSE INCREASING THE VARIABILITY WITHIN TREATMENTS WOULD INCREASE THE MST i.e Mean square due to treatments and hence raise the f ratio

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