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What If You Reject H 0 ? How much different is Second Population from which Your Sample Is derived? d is a rati o (Comparison) of group differences to.

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Presentation on theme: "What If You Reject H 0 ? How much different is Second Population from which Your Sample Is derived? d is a rati o (Comparison) of group differences to."— Presentation transcript:

1 What If You Reject H 0 ? How much different is Second Population from which Your Sample Is derived? d is a rati o (Comparison) of group differences to individual differences within Each group S = 0.2 M = 0.5 L = 0.8

2 Is Your Correlation Significant r is the Sample correlation  is the Population correlation r estimates  H 0 :  = 0 S r is the Standard Error of the Sample correlation if Ho is true

3 Standard Error of r Decreases With N As N increases, r should get closer and closer to Zero if H 0 is true

4 For a Given Value of r: t Increases With N Probability of t diminishes with 1.Increasing r 2.Increasing N A two-tailed test: r can be positive Or negative


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