# Charts

You may set on this tab the type of control charts you would like to draw. Depending on the type of parameters you have set on the Parameter tab. You may select and use the following chart types from the Variable Type Parameters group box.

X bar R chart

X bar S chart

Histogram

Pre-control chart

X chart

X MR chart

Pareto Chart

If Pre-Control Chart is selected then all other options get disabled and Best Sample will be displayed if Lower option has been selected under Limits tab. If any one of the above-mentioned charts is selected then Pre-Control option is disabled. Best Sample field will not be displayed.

Similarly following are the chart types for the Attributive Type Parameters

P chart

nP chart

U chart

C chart

Depending on the Subgroup Size you have set on the Sampling tab, attributive charts will be enabled for selection i.e. For Attributive type of parameter, P chart, nP chart, U chart and C chart can be selected. If Subgroup Size is greater than 0 then all options are available. If Subgroup Size is 0 then only P Chart and U Chart options are enabled. P and nP charts fall under ‘Based on Defectives’ group. While U and C chart fall under ‘Based on Defects’ group. In Charts tab if one/both options under one group is selected then options under the other group will be disabled.