Check Sheet

A simple, preformatted tally form used to mark counts and occurrences while data are being collected, often laid out like a checklist.

Key Points

  • Used at the point of work to capture frequency of events, defects, or attributes.
  • Predefined categories and spaces for tally marks ensure consistent data collection.
  • Summarized counts can be quickly turned into Pareto charts or histograms.
  • One of the seven basic quality tools; commonly applied in Manage Quality and Control Quality.

Example

During inspections on a hardware rollout project, the QA team uses a check sheet listing common defect types (e.g., loose connector, missing label, wrong part). Inspectors place a tally each time they see a defect. At the end of the week, the tallies are summarized to create a Pareto chart to prioritize corrective actions.

PMP Example Question

Which tool should a project manager use to record the type and frequency of defects during inspections so the data can later be summarized into a Pareto chart?

  1. Check Sheet
  2. Histogram
  3. Control Chart
  4. Scatter Diagram

Correct Answer: A — Check sheet

Explanation: A check sheet is a tally form designed for data collection at the source. Histograms and Pareto charts are used after data are collected; control charts track process stability over time; scatter diagrams show relationships between variables.

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