What is the application of the chi-square test in statistics?
An example of an AI chatbot conversation about the chi-square test application in statistics.
What is the application of the chi-square test in statistics?
The chi-square test is used to determine if there's a significant association between categorical variables.
Can you give me an example of how it's used?
Sure! For instance, it can be used to see if there's a relationship between gender and voting preference.
What are the assumptions of the chi-square test?
The main assumptions are that the data should be in frequency counts, categories should be mutually exclusive, and expected frequencies should be sufficient.
How do I calculate the chi-square statistic?
You calculate it by summing the squared difference between observed and expected frequencies, divided by the expected frequencies.
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