Attempts Score1 9. Gravetter/Walinau Essentials Chapter 12 - End-of-chapter ques

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Attempts Score1 9. Gravetter/Walinau Essentials Chapter 12 - End-of-chapter question 18 Aa Aa A developmental psychologist is examining the development of language skills from age 2 to age 4. Three different groups of children are obtained, one for each age, with n 16 children in each group. Each child is given a language-skills assessment test. The resulting data were analyzed with an ANOVA to test for mean differences between age groups. The results of the ANOVA are presented in the following table. Fill in all missing values Source df MS 20 Between treatments Within treatments Total 200 Flash Player WIN 30,0,0,113 3.34.1 2004-2016 Aplia. All rights reserved. C 2013 Cengage Learning except as noted. All rights reserved ? Graded Save & Continue

Explanation / Answer

Ans:

Number of treatments/groups=3

Total number of subjects=3*16=48

df(between)=3-1=2

df(within)=48-3=45

SS(within)=SS(total)-SS(between)=200-20=180

MS(between)=20/2=10

MS(within)=180/45=4

F=MS(between)/MS(within)=10/4=2.5

Source SS df MS F Between 20 2 10 2.5 Within 180 45 4 Total 200 47

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