Explain the seven QC tools.

Question

Accepted Answer

The 7 QC tools are essential techniques for quality control and improvement in various industries.

1. Cause-and-Effect Diagram: Also known as a Fishbone diagram, it helps identify root causes of a problem.
2. Check Sheet: A structured form for collecting and analyzing data, often used for tracking defects.
3. Control Chart: A graphical tool used to monitor process variation over time, ensuring processes remain stable.
4. Histogram: A bar graph representing the frequency distribution of data, useful for visualizing variations.
5. Pareto Chart: A bar graph that identifies the most significant factors in a dataset, based on the 80/20 rule.
6. Scatter Diagram: A graph that shows the relationship between two variables, helping to identify correlations.
7. Flow Chart: A diagram that represents a process, helping to visualize steps and identify areas for improvement.

Accepted Answer

1. Flow Charts · 2. Histogram · 3. Control Chart · 4. Cause and Effect Diagram · 5. Scatter Diagram · 6. Pareto Chart · 7. Check Sheet.

Accepted Answer

There are 7 quality control tools,

Checksheet 2. Pereto chart 3. Control chart 4. Cause and effect diagram/ fishbone diagram 5. Histogram 6. Stratification
These tools are used to find the problems and to improove quality of the product and proceas.

Interview Questions from Popular Companies