When you select a standard for data entry, a chart of the most recent data for that standard may be displayed.
Understanding the data on the chart
By default, the chart will display the last 25 data points for this standard. To change the number of data points displayed, click the Session menu, and then click Retrieval Settings.
If you need to view much older data that is no longer displayed on this screen, use the SPC Charts and Reports module to retrieve the older data. One way to access the Charts and Reports module is to click the SPC Charts button (if available) on the Data Entry tab.
Understanding the statistics calculated for the chart
The data points used to calculate the control limits on the chart are also used to calculate the statistics displayed on the Statistics tab (if available). To change the number of data points used to calculate the control limits, click the Session menu, and then click Retrieval Settings.
Data records that are retrieved with a bypass set to Include on charts and data lists only will not be used in the calculations.
If the program is configured to exclude out-of-control data points from these calculations, any out-of-control data points are excluded when statistics are calculated for your data set. By default, these excluded points are displayed on the chart as a diamond (♦ ).
To determine how the program is configured to display bypassed data and statistical outliers on your chart, click the Chart Options menu, and then click Legend. To view the reasons why these values are excluded from your calculations, click the Data Table tab and review the Special column of the data table.
In PDA mode , you must click the Tabs menu to access the Data Table tab. Also, the Chart Options menu and chart legend are unavailable in PDA mode.
Changing the display
To change the way the chart is displayed, right-click on the chart, or click the Chart Options menu. Then click Fonts and Colors, Display Options, Scaling, or Group Data.
In PDA mode, the Chart Options menu, Fonts and Colors feature and Scaling feature are not available.
If you want the charts to include default headings , add one of the following lines to the Convert.db file:
|
de_cht_hdrs=1 |
Headings are only displayed when you e-mail, save or print the chart. They are not displayed in the chart windows on the data entry screen. |
|
de_cht_hdrs=2 |
Headings are displayed in the chart windows on the data entry screen and in charts that you e-mail, save or print. |
If you add one of these lines to the Convert.db file, it will apply to all SPC data entry charts in all configurations.
Printing the chart
To print the chart:
Right-click on the chart, or click the File menu.
Point to Send To, and then click Printer.
If you want the charts to include default headings , add one of the following lines to the Convert.db file:
|
de_cht_hdrs=1 |
Headings are only displayed when you e-mail, save or print the chart. They are not displayed in the chart windows on the data entry screen. |
|
de_cht_hdrs=2 |
Headings are displayed in the chart windows on the data entry screen and in charts that you e-mail, save or print. |
If you add one of these lines to the Convert.db file, it will apply to all SPC data entry charts in all configurations.
To view other types of charts or reports for the this data, click the SPC Charts button (if available).
To view charts generated by MINITAB for this data, use one of the methods below. The options available to you will depend on how the system is set up.
Click the MINITAB tab.
Click the Data Table tab. Click the File menu, point to Send To, and then click MINITAB or MINITAB File. (In PDA mode, this feature is not available.)
For more information, see Exporting data to MINITAB.
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