#control chart

7 QC Tools | 7 Basic Quality Control Tools | 7 QC Tools for Process Improvement Read Complete article with pictorial representation

What are the 7 QC Tools for Process Improvement?

From Where did the 7 QC Tools come?

Why we use The 7 QC Tools for Process Improvement?

The 7 QC Tools are

Histogram

Pareto chart

Cause and Effect Diagram, Fishbone diagram, Ishikawa Diagram

Check Sheet

Scatter diagram

Flow chart, Process Flow Diagram

Control Chart

The manufacturing sector is highly competitive, and companies must continually improve their processes. In this article, we will discuss a step-by-step approach to continuous improvement in manufacturing. We will focus on collecting data for the process, prioritizing problems, monitoring defects, identifying the root cause of defects, standardizing the fix, and confirming the solution’s…

Watching my Weight with SPC (Statistical Process Control)

I’ve been working on a Statistical Process Control project for a client, building a workbook to automate construction of control charts. Years ago I wrote a tutorial called Introducing Control Charts (Run Charts). Many processes, in manufacturing, in business, or in nature, show fluctuations in their outputs. We can use Statistical Process Control (SPC) techniques to monitor these processes and…

Control Chart Rules, Patterns and Interpretation

Check this article for a pictorial representation of all Control Chart Rules, Patterns and Interpretation

One or More points are more than 3 sigmas from the center line

7 points in a row on the same side of the center

6 points in a row increasing or decreasing steadily

14 points continuously alternating up and down

2 out of 3 consecutive points > 2-sigma from the centerline (same side)

4 out of 5 consecutive points > 1-sigma limit from the center line (same side)

15 points in a row within 1 sigma of the center line (either side)