Stats: Chi-Square


Definitions

Chi-square distribution
A distribution obtained from the multiplying the ratio of sample variance to population variance by the degrees of freedom when random samples are selected from a normally distributed population
Contingency Table
Data arranged in table form for the chi-square independence test
Expected Frequency
The frequencies obtained by calculation.
Goodness-of-fit Test
A test to see if a sample comes from a population with the given distribution.
Independence Test
A test to see if the row and column variables are independent.
Observed Frequency
The frequencies obtained by observation. These are the sample frequencies.




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