Practice drills

Short decision drills for the work that is actually judged on the floor: which sampling decision to make, how to classify a fault, and what a measurement result really tells you. Repeat each one until the judgement is automatic. Free, no sign-up, and your best score is saved on your device — and to your account when you sign in.

• Sampling plan practice

  Work the accept or reject decision on eight lots, using the plan figures each scenario gives you.

  For: Final inspectors, QA officers, and merchandisers who sign off inspection reports.

  Start the drill

• Defect classification drill

  Sort ten realistic faults into critical, major and minor, and see the reasoning after each answer.

  For: Inspectors, line QCs, supervisors and trainers running calibration sessions.

  Start the drill

• Measurement audit drill

  Decide pass or fail on a size set, and separate operator measuring error from real process variation.

  For: QA officers, pattern and technical staff, and line QCs who audit measurements.

  Start the drill

These drills are self-study practice. They are not an accredited assessment, and no published sampling table or standard is reproduced here. Always work to your own buyer's programme and the current standard in production.