Chi square ppt

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Chi square ppt

  1. 1. Test of Association
  2. 2. Requirements • Bivariate • Non-Parametric • Sample Size should be 50 • 5 frequency in one cell
  3. 3. Test of Independent • Ho – The car model appeal is independent of the age groups Below 20 20-39 40 and above Like the car 140 80 40 Dislike the car 60 50 30
  4. 4. Test of Goodness of Fit • The movies appeal equally to all age groups. • The accidents are uniformly distributed over the week. • There is no association between economic condition at home and IQ.
  5. 5. Strength of Association Between Two Variables or Indexes of Agreement Contingency Coefficient • 0 to 1 value • (2/2) / (3/3) / (4/4)
  6. 6. Strength of Association Between Two Variables or Indexes of Agreement Phi-Correlation • 0 to 1 value • (2/2)
  7. 7. Strength of Association Between Two Variables or Indexes of Agreement Lambda Coefficient • Chances of reduction in error in estimating one variable to another variable • E.g. – 30%

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