You are consolidating two operational datasets. The legacy transportation management system (TMS) table contains 42,350 shipment records for Q3, while the new warehouse management system (WMS) table contains 50,000 shipment records for the same period. After running deterministic matching on tracking number followed by fuzzy matching on consignee name, the process produces 38,115 one-to-one matches. The project sponsor asks for the match rate of the TMS dataset. Rounded to one decimal place, which value should you report?
Match rate is defined as the number of records in the reference dataset that successfully find a counterpart divided by the total number of records in that reference dataset. Using the TMS table as the denominator:
38,115 ÷ 42,350 ≈ 0.900 → 90.0 %.
A figure of 76.2 % would result only if the WMS record count (50,000) were used as the denominator, so it is incorrect for the requested perspective. The other values do not correspond to any meaningful ratio in this scenario. Remember that match rate measures coverage only; it does not reveal how many of the links are actually correct (precision) or how many true links were missed (recall).
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