Which cycle emphasizes iterative learning with study of data after each cycle?

• A. Plan-Do-Study-Act cycle
• B. Plan-Do-Check-Act cycle
• C. Do-Plan-Study-Act cycle
• D. Plan-Do-Adjust Cycle

Answer: (A)

The main idea here is learning from each small test by looking closely at the data after every loop. In the Plan-Do-Study-Act cycle, you plan a change, carry it out, study the results by examining the data to see what happened and why, and then act on what you learned to refine the change or plan the next cycle. That explicit study step makes data-driven learning the centerpiece of the process, so each cycle informs the next.

Other cycles don’t foreground this learning step in the same way. One option shifts the order so doing comes before planning, which weakens the deliberate testing sequence. Another option uses a different wording and omits a distinct study phase, so there isn’t a clear, formal opportunity to analyze results before adjusting.