In order to determine whether the frequencies in a dichotomous variable are significantly different from a 0-50 split, with 50% of cases in each of the two categories of the variable, you would engage in:

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The binomial test is used to determine whether the observed frequencies of a dichotomous variable are significantly different from an expected frequency (in this case, a 50-50 split). The McNemar's test is used to analyze change over time in paired dichotomous variables, and the chi square tests are used for analyzing associations and differences in frequencies between two or more variables. Therefore, the best choice for this scenario would be the binomial test.

In Order to Determine Whether the Frequencies in a Dichotomous