Summarize two-category data with two-way tables and interpret joint, marginal, and conditional relative frequencies.
Interpret a marginal relative frequency
Problem
Interpret a \(60\%\) marginal relative frequency for \(P~=~\text{owns}~\text{pets}\). State the required aggregation, numerator group, denominator group, and contextual meaning.
Big Picture
What this problem is really about
A marginal relative frequency collapses the table across the other variable. Add every cell belonging to the named category, use that margin as the numerator and the grand total as the denominator, then interpret the percentage as a share of everyone surveyed regardless of the other category.
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