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Provide a nominal variable that might be displayed in the rows or columns of a table.
A nominal variable is a categorical or qualitative variable with no ordering to the categories.
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How many categories does your variable have?
For example, someone categorizing eye color as brown, blue, green, or other would be using 4 categories.
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Provide another nominal variable that might be displayed in a table:
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How many categories does your second variable have?
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If the variables do not interact, that is a way of saying they are .
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In testing for a possible association between your two nominal variables, does a large gap between expected and observed values indicate the variables are connected? .
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The chi-squared distribution .
Graph of Chi-squared distributions with several degrees of freedom:
