16. Chi-Square Test & Fisher’s Exact Test - Binary Data Video

Basic Statistical Tests
Training session with Dr Helen Brown, Senior Statistician, at The Roslin Institute, December 2015.
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These training sessions were given to staff and research students at the Roslin Institute. The material is also used for the Animal Biosciences MSc course taught at the Institute.
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*Recommended YouTube playback settings for the best viewing experience: 1080p HD
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Content:
Example: Binary data
-Do success rates of treatments for treating a disease in animals differ?

But are there differences between pairs of treatments in success rates?
Eg Compare A and B

Pairwise comparisons of each pair of treatments
Significant difference between treatments B and C

Example: Unordered Categorical Data
Do blood groups differ between disease and non-diseased animals?
Again use:
--Chi-squared test or
--Fisher’s exact test (better if cell numbers small)

SAS Output:

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