Economics 102-Statistics

Economics 102-Statistics

1. ·

   • Simple Regression
     • The Correlation Coefficient
       • P (rho) for population
       • r for sample
         • Properties of r:
           • 1). If r is greater than 0, then x & y are positively correlated
           • 2). If r is less than zero, then x&y are negatively correlated
           • 3). If r=0 then x & y are unrelated
           • 4). r is symmetric so order does not matter
           • 5). r is between 0 and 1
         • Formula
           • is = cov/variance
         • Hypothesis Testing w/correlations

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