Hey everyone, welcome to this lecture. What is a C chart? A C chart is used when you are capturing defects. And when the subgroup size is constant. A C chart tracks the number of defects and detects the presence of special causes. Let's look at this example.

You are provided the total number of defects observed in a paint job of a car body workshop. you capture the same sample size each day. Your job is to identify if the process is in control. You want the control chart to show control limits at one, two and three standard deviations above and below the center line. In this example, you are capturing defects and the sample size is constant. Thus, you will use a C chart and you will learn how to construct the C chart on Minitab in the next lecture, see you there