Weighting Factors and Allocation

Weighting is where the interview gets interesting. Equal weights are the easy case. Real business problems have unequal, time-varying, and sometimes unknown allocations. How you handle each case is what the interviewer is probing. The Three Allocation Models The Follow-Up Trap Double-Counting Scenarios The AVG trap catches experienced candidates. Weighted average across a bridge is SUM(amount * weight) / SUM(weight), not AVG(amount * weight). If an interviewer asks about averages with bridge tables, this is what they want to hear. What the Interviewer Writes