```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</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 type is DIMENSION with no sequence axis, making multiplicative highly implausible. The column name "stderr" (standard error) identifies a statistical measure of uncertainty/variability, which is an intensive property - it describes precision at a point, not an extensive quantity that accumulates. Standard errors are absolute levels (not ratios centered on 1.0) and cannot be meaningfully summed across entities; averaging is the appropriate aggregation. The range [0.0, 0.5] and sample values confirm small positive magnitudes typical of standard errors. Classified as intensive_additive with mean as primary reducer. </reasoning> <table_type_conflict>false</table_type_conflict> </result> ```