Chi Squared

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Pronounced "kai". Persons Chi-Squared test.

x2c = Σ (Oi - Ei)2 / Ei

  • Oi : Observed
  • Ei : Expected

Degrees of freedom: outcomes - 1. A coin flip has one degree of freedom.

Critical Values, look these up.

  • 10% : 2.706
  • 5% : 3.841
  • 2.5% : 5.024
  • 1% : 6.635
  • 0.1% : 10.828
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