Next, we will touch on the types of charts, Selection of control charts And details of each type of chart Let’s dive in..
1. Xbar-R chart
3. I-MR chart
2. Xbar-S chart
4. P chart
6. U chart
5. np chart
7. C chart
Here we need to find out the special cause present in the process. So that we can take action on that causes and bring our process within control limit.
Xbar = Sample Average ( X̅ )
From the chart, we need to find out the common cause / special cause present in the process. So that we can take action on that causes and improve our process.
The Xbar-S chart is the same as the Xbar-R chart. Here Standard deviation (S) is calculated for the S chart and plotted the same in the graph.
I-Chart: Individual chart used for monitoring the individual points measured in the process.
MR Chart: Moving range chart is the difference between each individual measurement.
P chart is an attribute data type control chart. P-chart is the percentage of defective units not-ok. For defective and sample size is the same or may vary.
np chart is an attribute data type control chart. np-chart is the number of defective units not ok. For defective, sample size is fixed.
u chart is an attribute data type control chart. u-chart is the number of defect of unit non-ok. u-chart is the number of defects of unit non-ok.
c chart is an attribute data type control chart. In this chart, the sample size is fixed.xed. unit non-ok. In this chart samples size is fixed.
Let's dive into the control chart 101...