MT PSYCH 60 - Formulas Mean = X N X= X n Mean Absolute...

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Formulas Mean μ = Σ X N X = Σ X n Mean Absolute Deviation MAD = Σ X - μ N Variance and Standard Deviation For a population σ 2 = SS N σ= 2 SS = Σ ( X - μ ) 2 = Σ X 2 - Σ X ( 29 2 N For a sample: s 2 = SS n - 1 s = s 2 SS = Σ ( X - X ) 2 = Σ X 2 - Σ X ( 29 2 n Z-Scores z = X - μ X = μ + z ×σ
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Correlation r = SP xy SS x × SS y SP xy = Σ XY - Σ X ( 29 Σ Y ( 29 n SS x = Σ ( X - X ) 2 = Σ X 2 - Σ X ( 29
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MT PSYCH 60 - Formulas Mean = X N X= X n Mean Absolute...

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