Fitting probability models to frequency data

5 important questions on Fitting probability models to frequency data

What variables are handles with a goodness-of-fit test?

Categorical or discrete numerical variables having more than 2 outcomes.

What variables are handled with a binomial test?

Categorical variables with only two outcomes.

How is the p-value level a found for a X2 goodness of fit test?

By the degrees of freedom and significance level a, in a table.
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What proportion is measured with the proportional model?

Proportion of he frequency of occurrence of events to the number of opportunities.

What is the pro of using X2 over the binomial test? And the con?

Pro: simpler calculation, con: less exact.

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