Chapter Contents |
Previous |
Next |

MACHART Statement |

You can use options in the MACHART statement to

- specify the span of the moving averages (the number of terms in the moving average)
- compute control limits from the data based on a multiple of the standard error of the plotted moving averages or as probability limits
- tabulate the moving averages, subgroup sample sizes, subgroup means, subgroup standard deviations, control limits, and other information
- save control limit parameters in an output data set
- save the moving averages, subgroup sample sizes, subgroup means, and subgroup standard deviations in an output data set
- read control limit parameters from an input data set
- specify one of several methods for estimating the process standard deviation
- specify a known (standard) process mean and standard deviation for computing control limits
- display a secondary chart that plots a time trend that has been removed from the data
- add block legends and symbol markers to reveal stratification in process data
- superimpose stars at points to represent related multivariate factors
- clip extreme points to make the chart more readable
- display vertical and horizontal reference lines
- control axis values and labels
- control layout and appearance of the chart

Chapter Contents |
Previous |
Next |
Top |

Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.