What is the effect of having small expected frequencies in a Chi-square test?

  • It does not affect the test
  • It increases the power of the test
  • It invalidates the test
  • It reduces the power of the test
In a Chi-square test, having small expected frequencies can reduce the power of the test and potentially lead to erroneous conclusions. This is because the Chi-square test is based on the assumption that the expected frequency of each category is at least 5.
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