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How to QA every call instead of a small sample

Why sampled call QA misses most problems, the maths behind it, and a step-by-step plan to score every eligible call on your own QA form.

Updated 4 min readThe Orian team

The short answer

Manual QA usually scores a handful of calls per agent each month, which is well under 1% of what they handle, so most breaches and coaching moments are never seen. Scoring every call means automating the scoring itself: transcribe each call, score it on the QA form your team already uses, link each score to its moment in the call, and keep people for calibration, disputes and coaching.

Why a sample misses most problems

Say an agent handles 50 calls a day. Over 22 working days that is 1,100 calls a month. If QA scores four of them, it has looked at 0.36% of the agent's work.

Coverage is only half the problem. The other half is detection. Suppose a required disclosure is skipped on 1 call in 100. The chance that a random sample of four calls includes even one of those misses is 1 − 0.99⁴, about 3.9%. Most months, the scorecard says everything is fine.

Calls scored per agent a monthShare of a 1,100-call monthChance of seeing a 1-in-100 miss
40.36%3.9%
100.9%9.6%
504.5%39.5%
Every eligible call100%Every miss is on a scored call
A random sample of n calls catches a problem that occurs on 1% of calls with probability 1 − 0.99ⁿ.

Samples are rarely random, either. Reviewers pick calls that are easy to find: long calls, escalations, calls a team lead flagged. Agents notice which calls get scored, and so do clients.

What changes when every call is scored

  • Compliance becomes a measured number. Instead of "no misses found in the sample", you can say what share of eligible calls had each required disclosure.
  • Coaching targets real patterns. One weak call is noise. The same missed step on 30% of an agent's calls is a coaching plan.
  • Scores feel fairer to agents. A score built on hundreds of calls is harder to argue with than one built on four, and one bad call no longer defines the month.
  • Clients see evidence, not anecdotes. Coverage you can show is easier to defend at a business review than a sample you have to explain.

How to get to 100% coverage, step by step

  1. Start from the QA form you already use

    Don't invent a new scorecard. Take the form your QA team scores against today, or your client's form, and sort its items into two groups: those that can be checked from what is said on the call (a disclosure, a verification step, an offer of a payment plan) and those that need human judgement (tone, empathy, whether the resolution was right).

  2. Define which calls are eligible

    Exclude what should not be scored: wrong numbers, calls that dropped in the first seconds, calls where the customer declined recording, internal transfers. Write the rule down so the coverage number means the same thing every month.

  3. Turn each item into a check you can verify

    "Agent verified identity" becomes "agent confirmed two of date of birth, postcode and account number before discussing the account". Vague items produce vague scores, whether a person or software is doing the scoring.

  4. Link every score to evidence

    Each item should point to the moment in the call that earned or lost the point. Without that, a dispute turns into an argument about memory.

  5. Calibrate before you publish

    Have QA leads score a set of calls by hand and compare with the automated scores, item by item. Tighten definitions where they disagree. Repeat on a fresh set until agreement is consistently high, then keep spot-checking every week.

  6. Show agents first, then teams, then clients

    Let agents see their own scores and dispute them before scores reach team leads or clients. Upheld disputes are the best source of fixes for your item definitions.

  7. Keep people where judgement matters

    Automated scoring should free QA analysts from listening for checklist items, so they can spend their time on calibration, disputes, the hardest calls and coaching.

Pitfalls to avoid

  • Scoring against a generic form. A vendor's default scorecard will not match what your client audits you on. Score on the client's own form.
  • Publishing scores without evidence. If agents cannot see why they lost a point, the score will not change what they do.
  • Treating every item as automatable. Items that need judgement should stay with people, or be flagged for review rather than scored.
  • Ignoring data handling. Scoring every call means transcribing every call. Decide up front where recordings and transcripts are kept, who can open them, what is masked and when they are deleted. See keeping card numbers out of recordings.
  • Changing what counts as eligible mid-quarter. Coverage numbers only compare if the rule stays the same.

What to measure once it is running

MeasureWhat it tells you
CoverageShare of eligible calls that were scored. The target is 100%, and any gap should have a known reason.
Item pass rateFor each QA item, the share of calls that passed. This is where compliance gaps show up.
Agreement with QA leadsHow often calibration reviewers agree with the automated score on the same item. Track it weekly.
DisputesHow often agents dispute, and how often they are right. A high upheld rate means an item definition needs work.
Time to feedbackTime between the call and the agent seeing the score. Aim for days, not weeks.

Where Orian fits

How Orian scores every call

  • Every eligible call is scored on your client's own QA form, imported from PDF, Excel or Word.
  • Each score item links to its moment in the recording. Agents see their own scores first and can dispute them.
  • Each client's QA items map to one in-house standard, so programmes compare fairly.
  • Recordings, transcripts and scores stay inside your network. Sensitive details are masked in the transcript, and card, bank and ID numbers are muted in the recording.

FAQ

Questions people ask.

  • Auto-QA, or automated quality assurance, uses speech recognition and AI to score calls against a QA form without a person listening to each one. It lets a contact centre score every eligible call rather than a small sample, while people focus on calibration, disputes and coaching.

  • With manual QA, a few calls per agent per month is common because listening takes time, but that is too few to catch problems that happen on 1 call in 100. With automated scoring the answer becomes every eligible call, plus a smaller human-reviewed set for calibration.

  • No, and it shouldn't try. It replaces the listening needed to check items that can be heard on the call. Analysts are still needed to calibrate the scoring, judge items that need context, settle disputes and coach.

  • It is as accurate as the item definitions and the transcription behind it, so measure it rather than assume it. Compare automated and human scores on the same calls, item by item, before launch, and keep spot-checking afterwards.

Bring a QA form. Watch it scored live.

We'll run a live call against your client's own form, then plan a free 30-day pilot if it fits.