Which of the following are tools used in quality control? (Select TWO).

A Gantt chart is a project scheduling tool used to plan and visualize task timelines and dependencies, not a quality control instrument.

The Ishikawa diagram (also known as a fishbone or cause-and-effect diagram) is a quality control tool that visually maps potential root causes of a defect across categories such as people, process, and equipment.

Parametric estimating is a cost and duration estimation technique that applies statistical relationships to historical data, not a quality control tool.

A probability and impact matrix is a risk management tool used to assess and prioritize identified project risks, not a quality control tool.

The Pareto chart is a quality control tool based on the 80/20 principle that ranks defect causes by frequency or impact, allowing teams to focus improvement efforts on the factors with the greatest effect on quality.