Finding F-Critical (Comparing Variances)

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SUMMARY

The discussion focuses on calculating F-critical values for a hypothesis test comparing variances of two samples, each with a count of 117. The user expresses difficulty in finding appropriate F-critical value tables, particularly those that include values for F < 0. A participant clarifies that F values are always greater than zero, confirming that the user’s expectation of finding a left side in the tables is misplaced. This highlights the importance of understanding the properties of the F-distribution in hypothesis testing.

PREREQUISITES
  • Understanding of hypothesis testing in statistics
  • F-distribution properties
  • Knowledge of sample variance comparison
  • F-critical value tables or software tools for statistical analysis
NEXT STEPS
  • Study the properties of the F-distribution in depth
  • Learn how to use statistical software like R or Python for calculating F-critical values
  • Explore hypothesis testing techniques for comparing variances
  • Review statistical tables and their applications in hypothesis testing
USEFUL FOR

Students in statistics, researchers conducting hypothesis tests, and anyone involved in statistical analysis requiring variance comparison.

k_squared
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I'm in elementry statistics. For my paper, I have to do a hypothesis test that the variances for two samples with a count of 117 are equal. Easy enough, but I can't find any way of getting the f-critical values. NONE of the tables I've found with, say, 120 in it, has a left side. Thanks for any help...
 
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By "left" do you mean "F < 0"? If so that should not surprise you. By definition, F > 0.
 

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