Correlation. u Definition u Formula Positive Correlation r = 1 1 2 3 4 5 0 12345.

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Presentation transcript:

Correlation

u Definition u Formula

Positive Correlation r =

Negative Correlation r =

Zero Correlation r =

Moderately Positive Correlation

Hypothesis Test Steps 1. State null hypothesis 2. Choose significance level 3. Calculate degrees of freedom 4. Find table value 5. Compare calculated and table value 6. Reject or accept Ho

Assumptions u Representative sample (random) u Normal population u Interval measures u Linearity u Homoscedasticity