Interaction Coverage Ratio

Interaction Coverage Ratio is the share of total customer conversations a QA program actually reviews, and it sets the ceiling on everything downstream: coaching accuracy, compliance defensibility, and the credibility of the ROI story an agency tells a client. Manual review typically touches 2 to 5 percent of calls, so a single disputed interaction can invalidate a monthly retainer report. Automated scoring pushes coverage toward 100 percent, which changes the unit of analysis from anecdote to distribution. ScorebuddyCX claims auto-scoring across voice, chat, and email cuts manual QA workload by more than 60 percent, which is the operational proof that coverage and headcount can move in opposite directions. CallMiner applies the same full-population logic across voice, video, and digital channels. The agency implication: price QA retainers against coverage percentage and channel count, not seat count, because coverage is the variable clients can verify.