stat cheat sheet final

stat cheat sheet final - CONFIDENCE INTERVAL ⋅ ⋅ n z x...

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Unformatted text preview: CONFIDENCE INTERVAL ⋅ + ⋅- n z x n z x σ σ α α 2 2 , SAMPLE SIZE CALCULATION 2 2 2 ⋅ = w z n σ α PROPORTION CI n p p z p n z n z n p p z n z p ) ˆ 1 ( ˆ ˆ 1 4 ) ˆ 1 ( ˆ 2 ˆ 2 2 2 2 2 2 2 2 2- ± ≈ + +- ± + α α α α α PROPORTION CI n CALCULATION ( 29 2 2 2 2 2 2 2 2 4 2 2 2 2 2 2 ) ˆ 1 ( ˆ 4 ) ˆ 1 ( ˆ ) ˆ 1 ( ˆ 4 ) ˆ 1 ( ˆ 2 w p p z w z w w p p p p z w z p p z n- ≈ +--- ± -- = α α α α α CI for variance 2 2 2 2 2 ) ( ) 1 ( χ σ σ ≈- =- ∑ X X S n i ----- 2 1 , 2 1 2 2 1 , 2 2 ) 1 ( , ) 1 ( n n S n S n α α χ χ TYPE II ERRORS H a = μ> μ - + Φ n z σ μ μ α ' H a = μ< μ - +- Φ- n z σ...
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stat cheat sheet final - CONFIDENCE INTERVAL ⋅ ⋅ n z x...

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