Work Log
Record attempts, observed results, assumptions, and decisions in a work log so later readers can understand why a change was accepted.
-
-
Technical Search Query
Write a technical search query with the tool, operation, and relevant condition, preserve diagnostic details, and verify a found answer.
-
Root Cause Analysis
Investigate the conditions behind a recurring problem, distinguish containment from corrective action, and check outcomes without assuming one final cause.
-
Five Whys
Use repeated why questions to trace possible causes, check the evidence for each connection, and branch when one explanation is not enough.
-
Proxy Metric
Use a proxy metric as a stand-in for an outcome that is hard to measure, state the link it relies on, and stop treating activity as the result.
-
Selection and Nonresponse Bias
See how who ends up in a dataset, and who declines to answer, can shift a result in ways a larger sample does not fix, and what to report instead.
-
Missing Data
Tell a blank from a zero, ask why a value is missing before filling it, and see why imputation cannot create an observation that was never made.
-
Measurement Error
Understand measurement error as the gap between a recorded value and what happened, arising from instruments, people, definitions, and processing.
-
Quantitative and Qualitative Data
Tell quantities from numeric labels and ordered ratings, and use qualitative evidence as a source of hypotheses rather than as a frequency nobody measured.
-
Exploratory Data Analysis
Understand exploratory data analysis as looking at counts, keys, blanks, ranges, and groups to learn a dataset’s structure before choosing what to compute.
-
Gap Analysis
Gap analysis compares a current state with a desired state, measures the gap in absolute and relative terms, and investigates causes before choosing a fix.
-
Problem Domain and Scope
Understand Problem Domain and Scope through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Operational Definition
Understand Operational Definition through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Primary Metric and Guardrail Metric
Understand Primary Metric and Guardrail Metric through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Baseline
Understand Baseline through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Output and Outcome
Understand Output and Outcome through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Use-Case Brief
A use-case brief connects an idea to a bounded trial by naming who it helps, the problem, the intended outcome, and the evidence needed to decide.
-
Cannibalization
Understand Cannibalization through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Overstock %
Understand Overstock % through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Stockouts
Understand Stockouts through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Lead-Gen Software
Understand Lead-Gen Software through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Supplier Constraints
Understand Supplier Constraints through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Long Lead Times
Understand Long Lead Times through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Slow-Moving SKUs
Understand Slow-Moving SKUs through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
SKU
Understand SKU through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Real-Time Inventory Tracking
Real-time inventory tracking updates stock as events arrive. See how duplicate or missed events distort counts and how on-hand and available quantities differ.
-
Supplier Management
Understand supplier management: what the work covers, how to define supplier performance measures, and how to track exceptions and corrective actions.
-
Reorder Point (ROP) Optimization
Understand Reorder Point (ROP) Optimization through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Safety Stock
Understand Safety Stock through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Backorder Rate
Understand Backorder Rate through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Lost Sales Value
Understand Lost Sales Value through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Fill Rate
Understand Fill Rate through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Stockout Rate
Understand Stockout Rate through clear definitions, worked examples, and the conditions needed to interpret a business measure.
-
Leading and Neutral Questions
Ask about experience without embedding a preferred answer or an untested assumption.
-
Active Handling Time and Elapsed Time
Separate time spent doing work from the full interval between a defined start and finish.
-
Process Mapping
Trace a workflow through triggers, decisions, handoffs, waiting, and usable outcomes.