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What must the conditional distributions across all categories of one subpopulation add up to?
AThey must add up to the sample size
BThey must add up to the row total
CThey must add up to exactly one
DThey must add up to one hundred
Answer & Solution
Correct answer: C. They must add up to exactly one
1. Each conditional value is a share of one subpopulation.
2. Every member of that subpopulation falls into exactly one category.
3. The shares therefore account for the whole subpopulation and add up to exactly one, which is the arithmetic check on the working.
_Source: OpenStax Introductory Business Statistics (CC BY 4.0), Ch 2 "Descriptive Statistics", section 2.1 Display Data_
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