```xml <result> <column_name>Rank when first operational</column_name> <family>additive</family> <subtype>intensive_additive</subtype> <confidence>0.90</confidence> <requires_user_confirmation>false</requires_user_confirmation> <sum_meaningful>false</sum_meaningful> <signed>false</signed> <reducers> <primary_reducer>min</primary_reducer> <valid_reducers>min, max, median, mode</valid_reducers> <excluded_reducers>sum (summing ranks is meaningless), product (not a ratio), mean (ordinal scale makes arithmetic mean questionable)</excluded_reducers> <average_semantics>n/a</average_semantics> </reducers> <inner_outer_measure> <inner_measure_reducer>min</inner_measure_reducer> <outer_measure_reducer>max</outer_measure_reducer> </inner_outer_measure> <multiplicative_partner_derivable>false</multiplicative_partner_derivable> <reasoning> DIMENSION table with no sequence axis strongly priors against multiplicative. Column name "Rank when first operational" explicitly signals an ordinal ranking position (1-177), which is an absolute level, not a ratio. Ranks are ordinal intensive values where summing is meaningless (you cannot add "rank 1" and "rank 10" to get "rank 11"). The range [1, 177] with 26% distinct values confirms this is a positional ordering. Primary reducer is min (best/earliest rank), with max as outer bound; mean is excluded because ordinal scales lack meaningful arithmetic intervals. </reasoning> <table_type_conflict>false</table_type_conflict> </result> ```