Multiple Stream Process (MSP) X and MR Chart for Variables

Creates a Multiple Stream Process (MSP) X (individual observations) and MR (moving range) chart for each variable in the input descriptor continuous dependent Variable list. You can set the center line for the X-bar chart and sigma; also computes SixGraph summary and short-run charts.

 Short-run charts can also be computed; if a categorical variable is specified in the input descriptor, then that variable will be used to assign samples to parts; otherwise always k (as specified by the user) consecutive samples will be assigned to consecutive parts.

Element Name Description
General
Detail of computed results reported Specifies the level of computed results reported. By default, the respective chart summary is reported. If All results is requested, spreadsheet summaries for each chart, default results for runs tests, and outlier summaries are also computed and reported in results spreadsheets.
Type of X chart Type of X group chart for individuals (sigma will be estimated from moving ranges).
Short run chart Specifies whether the current chart is a short-run chart for multiple parts; if so, STATISTICA will either assign samples to parts based on the specified fixed number of samples per part, or take the second categorical predictor variable (if one is specified) to assign samples to parts.
Number of samples per part Number of samples per part (for short-run charts); if a categorical predictor variable is specified, STATISTICA will determine the assignment of samples to parts from the integer codes found in that variable; otherwise, STATISTICA will use this parameter to assign consecutive k samples to parts.
X Chart Specs
Applies user-defined centerline Applies user-defined centerline value for the X chart; if false, compute the centerline value from the data (mean).
User-defined centerline value User-defined centerline value for X chart.
Applies user-defined sigma Applies user-defined value for sigma to the X chart; if false, estimate sigma from the data via moving range.
User-defined sigma value User-defined value of sigma (will automatically compute center line value for X chart).
Lower control limit X Lower control limit for X chart; in multiples of sigma.
Upper control limit X Upper control limit for X chart; in multiples of sigma.
Show warning lines (X) Show warning lines in the X chart
Lower warning limit X Lower warning limit for X chart; in multiples of sigma.
Upper warning limit X Upper warning limit for X chart; in multiples of sigma.
MR Chart Specs
Lower control limit MR Lower control limit for MR chart; in multiples of sigma.
Upper control limit MR Upper control limit for MR chart; in multiples of sigma.
Show warning lines (MR) Show warning lines in the MR chart.
Lower warning limit MR Lower warning limit for MR chart; in multiples of sigma.
Upper warning limit MR Upper warning limit for MR chart; in multiples of sigma.
Process Capability
Creates Cpk, Ppk, etc. Creates process capability and performance indices (summaries).
Type of specification limits Type of specification limits: Two-sided: Nominal plus/minus delta; Nominal, lower, Upper; One-sided: Lower, nominal; Nominal, upper.
Nominal value (for spec. limits) Nominal value, for process capability computations.
Delta value (for spec. limits) Value of delta, for defining specification limits as nominal plus/minus delta.
Lower specification limit Lower specification limit; not applicable if Type of specification limits is equal to Nominal Upper (one-sided).
Upper specification limit Upper specification limit; not applicable if Type of specification limits is equal to Lower Nominal (one-sided).
Show specs in chart Show process specification limits in the X or X-bar chart.
Displays
Formats for values on axes Select how to determine the display format of scale (axis) labels in control charts; choose From variable formats to format the scale (axis) labels using the display format of the respective variable in the plot; use Number of digits to specify a fixed number of digits for the display format.
Number of digits for scale Specifies the number of digits for the display format, for scale (axis) labels in charts; this options is only applicable if the Formats for values on axes option is set to Number of digits.
Number of digits values Specifies the number of digits to be used for displaying numbers (values other than scale or axes values for charts) in various charts and results tables.
Process capability, n of digits Specifies the number of digits to be used for displaying process capability indices and related statistics.
Highlight consecutive runs Highlights consecutive runs of maximum plot points or consecutive runs of minimum plot points from the same stream at least as long as the number r specified in the edit field. For example, if the value of r is equal to 4, then in the plot, runs of at least 4 consecutive samples with maximum values or minimum values from the same stream will be highlighted.
Run length Specifies the minimum length of a run to be highlighted in the multiple stream (group) chart.