How do you ensure forecast accuracy?
A core FP&A interview question — asked in analyst and associate interviews across IB, PE, and the Big 4.
THE SHORT ANSWER
(1) Measure: track forecast vs. actual deviation by BU/metric every quarter. (2) Analyze misses: systematic bias or random? (3) Improve inputs: better pipeline data, earlier signals from operations. (4) Model improvement: add/refine drivers based on what caused the miss. (5) Accountability: review accuracy in quarterly FP&A; retrospectives.
WHAT INTERVIEWERS LISTEN FOR
- ✓Measure forecast vs actual deviation
- ✓Analyze systematic vs random bias
- ✓Improve input data quality
- ✓Refine model drivers
- ✓Quarterly accuracy reviews
COMMON MISTAKES
- ✗Only focusing on one metric
- ✗Ignoring root cause analysis
- ✗No accountability process
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