How to calculate ANOVA table by hand

A-Total Sums of Squares

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Work out overall mean for all scores Work out how much each score varies from the mean score Square the variations Add all the squared variations together

Caption: : (doubt they'll ask this one)

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B-Within group sum of squares

Caption: : (doubt they will ask this one)

Work out overall mean for each group Work out variation of scores from group mean Square the variation Add variations together

C-Between group sums of squares

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Total sums of squares-within sums of squares So it would be A-B=C

Caption: : (could ask this one if they give us the results for A and B)

D-Between group df

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Number of groups-1 So if we are asked how many groups there were, it would be the number in the table+1

Caption: : (could be asked)

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E-Within groups df

Workout the number of P's within each group-1 Add scores together for each group E.g (13-1)+(15-1)+(19-1)=44

Caption: : (don't think they could ask us this one unless they told us how many participants were in each group)

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F-Total df

Number of P's-1 So to work it out, it will be number of P's+1

Caption: : (will probably be asked)

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G-Calculating ETA squared

Sum of squares between/sum of squares total (C/A)=G

Caption: : (could possibly ask us this)

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H&I-Calculating mean squares

H-sum of squares between/between df (C/D) I-sum of squares within/within df (B/E)

Caption: : (could possibly ask this)

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J-Calculating the F value

Mean square between/mean square within (H/I)=J

Caption: : (could ask this)