```xml <result> <column_name>stderr</column_name> <family>additive</family> <subtype>intensive_additive</subtype> <confidence>0.85</confidence> <requires_user_confirmation>false</requires_user_confirmation> <sum_meaningful>false</sum_meaningful> <signed>false</signed> <reducers> <primary_reducer>mean</primary_reducer> <valid_reducers>mean, min, max, median, distribution</valid_reducers> <excluded_reducers>sum (summing standard errors across entities is statistically meaningless), product (not a ratio)</excluded_reducers> <average_semantics>arithmetic_mean</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> Table is DIMENSION with no sequence axis, making multiplicative highly implausible (gate prior). The column name "stderr" (standard error) identifies a statistical uncertainty measure—an intensive property that describes precision at each entity. Standard errors are absolute levels (not ratios near 1.0; range [0.0, 0.5] confirms this) and cannot be meaningfully summed across entities (combining standard errors requires variance pooling, not addition). The values are strictly non-negative and bounded, consistent with an intensive statistical measure. Primary reducer is mean for aggregating uncertainty estimates. </reasoning> <table_type_conflict>false</table_type_conflict> </result> ```