Chi Square Tests

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Chi Square - 1

  • Find total number 
  • Divide by amount
  • Make table- O/E/O-E/squared/^2 val div by E
  • Add last numbers in table
  • n-1= df
  • 5%= 0.05
1 of 4

Chi Square- Ratios

  • Use ratio to calc how much expected
  • Same table as normal
  • If value smaller then matches
2 of 4

Chi Square- 2 x 2 Table

  • Row and Column totals
  • Row total x C total/grand total (4 values)
  • Same table as norm but Yates correction (-0.5)
  • Then divide by E
  • Add last columns
  • Df= 1
  • If value higher then is a difference
3 of 4

One sample t test

  • t= Sample mean- Pop mean/ Error
  • If value smaller then no difference
4 of 4

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