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formula sheet

# formula sheet - Formula Sheet x= x s= n z-score = x x n 1...

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Formula Sheet x x n = ( ) 2 1 x x s n = value - mean z-score standard deviation = mean 1 std. dev. ~ 68% mean 2 std. dev. ~ 95% mean 3 std. dev. ~ almost all ± ± ± 3 1 IQR = Q Q 1.5 IQR Rule 1 Q 1.5 IQR × 3 Q 1.5 IQR + × 3 SD Rule ( ) ( ) mean 3 std.dev. mean + 3 std.dev. STAT > Summary Stats > Columns Regression 1 1 1 1 x y x y r z z n x x y y r n s s = = y a bx = + ± where y x s b r s = a y bx = STAT > Graphics > Scatter Plot STAT > Regression > Simple Linear Residual = y y ± ( ) ( ) 1 C P A P A = ( ) mean x P x = STAT > Calculators > Normal Standard Errors of Sampling Distributions x n σ σ = l (1 ) p p p n σ = One Population Confidence Intervals l . . p z s e ± where l l ( ) . . 1 s e p p n = . . x t s e ± ⋅ where . . s s e n = and 1 df n = Sample Sizes l l ( ) 2 2 1 p p z n m = 2 2 2 z n m σ = Test Statistics l 0 . . p p z s e = where ( ) 0 0 1 . . p p s e n = 0 . . x t s e μ = where . . s s e n = and 1 df n = STAT > Proportions > One Sample > With Summary STAT > T-Statistics > One Sample > With Data (a column) or With Summary STAT > Calculators > T

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formula sheet - Formula Sheet x= x s= n z-score = x x n 1...

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