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psy 207 formula

# psy 207 formula - ℚ 3 ℚ 1 ○ 3 Semi – Interquartile...

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PSY 207 - Formulas 1 Chapter 1 1 = a 1 + b 1 + c 1 + … + z 1 2 2 = (a 1 ) 2 + (b 1 ) 2 + (c 1 ) 2 + … + (z 1 ) 2 3 ( ) 2 = (a 1 + b 1 + c 1 + … + z 1 ) 2 4 = (a 1 - α ) + (b 1 - α ) + (c 1 - α ) + … + (z 1 - α) 5 2 = (a 1 - α ) 2 + (b 1 - α ) 2 + (c 1 - α ) 2 + … + (z 1 - α) 2 Chapter 2 1 = N 2 = f 1 x 1 + f 2 x 2 + … + f n x n 3 Proportion = ρ = 4 Percentage = ρ (100) = Chapter 3 1 POPULATION mean, μ = 2 SAMPLE mean, M = 3 Overall/Weighted Mean = = 1 + 2 ) / (n 1 + n 2 ) 4 Median (only when n=even) = 5 Mode = Greatest Frequency

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PSY 207 - Formulas 2 Chapter 4 1 Range = URL X max LRL X min = (X max + 0.5) (X min 0.5) 2 Interquartile Range =
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Unformatted text preview: ℚ 3 - ℚ 1 ○ 3 Semi – Interquartile Range = ○ 4 Deviation = X – μ ○ 5 SS -Definitional formula (whole numbers), SS = 2-Computational formula (decimals and fractions), SS = 2 – ○ 6 Standard Deviation = = -POPULATION standard deviation = σ = = -SAMPLE standard deviation = s = = ○ 7 Variance = mean squared deviation = = -POPULATION variance = σ 2 = = -SAMPLE variance = s 2 = = PSY 207 - Formulas 3 Chapter 5 ○ 1 z- score formula, z = ○ 2 Find X, X = μ + z σ Chapter 6 ○ 1 p(A) =...
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