How is sums of squares worked out for within group?

Sum (Score - mean)2

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How is the sum of squares worked out for a between group?

(Mean of each group - Mean of Observed group)2 x N of pps in each group

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What is the equation for total sum of squares?

TSS = SSb + SSw

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How do you work out Mean squares?

SSW/D.F

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What is the degrees of freedom for MS between?

The number of groups -1

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What is the degrees of freedom for MS within?

The number of pps - Number of Groups

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How is F worked out in an ANOVA?

Between/Within

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What is a type 1 error?

False Positive

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What is a type 2 error?

False Negative

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What is the equation for the scheffe test?

(Mean of first sample - Mean of second sample)2/Within group variance (1/first sample + 1/second sample)

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Simplified way to work out scheffe

Square mean difference, then multiply it by number of participants, then divide by 2: Then this is divided by the Mean square Within: This is the reported scheffe

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What is the equation for a tukey test?

HSD = Square root (MS within/number of pps in group)

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Then what?

Compare this number with the different means, anything lower than this figure, is not significant

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What is the equation for a t-test?

Mean of group 1 - mean of group 2 / 2 x Square root (Ms error/n)

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How is the critical value of t found for multiple comparisons in the t-test?

P= 0.05/c

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What does C stand for?

Number of comparisons: Also known as the bonferroni correction test

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What is the four assumptions for the F ratio?

Independence, random sampling, homogeneity of variance and normality

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What is the equation for a Z score?

Z=Skew-0/SESkew

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How do you work out the SEskew?

Square root(6/N)

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What is the Z score associated with?

If Skew is greater than 1.96 then the sample is significantly different from normal

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What is a positive skew?

Higher than 1.96

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What is a negative skew?

Negatively higher than negative 1.96

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What is Eta squared?

N2 = SStreatment/SStotal

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Other cards in this set

Card 2

Front

(Mean of each group - Mean of Observed group)2 x N of pps in each group

Back

How is the sum of squares worked out for a between group?

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