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Topics related to the items contained within the 'Parts/Processes' tree, such as the setup of variables, attributes, tags, and blueprints
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There were 21 articles found in this category:
  1. questionHow do I create an equation that calculates the range between three different variables?
    If you have three variables ("V1", "V2", and "V3"), you can create a fourth variable ("Range") to calculate the range between the subgroups plotted for the three variables. For every set of subgroups added to "V1", "V2", and "V3", a corresponding subgroup will be calculated for the "Range" vari ...

  2. questionWhat is the difference between subgroup size, subrange size, and sample size?
    Subgroup Size/Subrange Size: The term subgroup size applies to a variable characteristic and controls how many samples (also called data values or individual readings) make up a single plotted point on a control chart (called a 'subgroup'). The subgroup size can be any whole number (integer) gr ...

  3. questionWhat is the difference between a base chart type and a default chart type?
    Both the base chart type and default chart type are configured in the "Settings" tab of the variable advanced properties window (accessed under the "Parts/Processes" tree). Attribute characteristics do not have a base chart type (but they do have a default chart type). The "Base Chart Type" op ...

  4. questionHow can I print or preview a report in WinSPC?
    There are many different ways in WinSPC 8.0 to print or preview the new reports books and report templates. Reports can be accessed from the right-click menu of most WinSPC administrator tree objects, including folders, parts, variables, collection plans, and datasets. The right click menu allo ...

  5. questionHow are Variable Analyzer's visualizations related to Data Collection's visualizations and Variable Setup?
    Variable Analyzer is an analysis tool. It is independent of your Data Collection view and your Varialbe's configuration settings. However, the Variable Analyzer will initially take the settings that you configure within your Variable as the defaults to set the Calculated Control Limits that are ...

  6. questionWhat are Reasonable Limits and how are they used in WinSPC?
    Introduction In addition to standard SPC limits such as Specifications Limits/Engineering Limits and Control Limit, WinSPC includes a set of limits that serves a different purpose. Reasonable Limits offer remedies to a variety of scenarios that are occasionally problematic -- in particular, two ...

  7. questionWhat is the difference between the various Attribute Collection Methods?
    Introduction There are 4 different Collection Methods within an Attribute's Advanced Setup under the 'Settings' tab. The method selected determines the manner in which the Standard data entry pane in the Data Collection module functions. The options are: Totals Add Tally Up Tally Down Totals Th ...

  8. questionHow can I see the changes or events that have occurred for a specific WinSPC item?
    WinSPC can be configured to track and record changes to objects in WinSPC, such as when items are created, modified, or deleted. This information is stored in the WinSPC Event Log (also called the Audit Trail) and is accessible to an administrator. In order for WinSPC to record any item changes ...

  9. questionHow do I move or copy items in WinSPC?
    Moving Tree Items Items within the Navigation Tree, including folders and any entities they may contain, may be moved from one location in the tree to another by following the procedure listed below: Log in to WinSPC as the Admin user or a user that has Administration permissions to Create-Edi ...

  10. questionHow are the initial control limits calculated for attributes (when there is not any data)?
    If an attribute is configured to have calculated control limits, WinSPC will determine an intial set of control limits to use prior to the first time the limits are recalculated based on the data (by default, this will occur after the 25th subgroup). If the attribute has a fixed (or constant) lo ...

  11. questionTip: Easy access to the properties of a control test template from a control test template link
    Did you know you can access the properties of a control test template from anywhere you see a control test template link? If you double click on any control test template link (or right click on the link and select "Properties"), it will display the properties of the source control test template ...

  12. questionWhat is inheritance?
    Inheritance is an administration object behavior (introduced in WinSPC 8.0) where the object not only affects other items at that object's level, but also affects other objects that are in the lower levels beneath that object. Two of the new administrative objects in WinSPC 8.0, control test li ...

  13. questionHow do I create, setup and use a blueprint in WinSPC?
    Introduction A Blueprint is a pictorial way to relay information to the operator. Blueprints can make data collection more intuitive to operators collecting data in WinSPC. The most common uses for Blueprints are to graphically define a variable's location(s) or specification(s) for the dat ...

  14. questionHow do I use the Equation Builder and Table function?
    The Equation Builder is WinSPC's tool for creating equations. Equations are sometimes used to calculate values, limits and targets for a variable, and even can be used in user-defined tests and triggers. Displaying the Equation Builder You can use the Equation Builder to develop an equation for ...

  15. questionWhat is the difference between the '.Mean' and '.Avg' statistics in the equation builder?
    In the WinSPC Equation Builder, the '.Mean' statistic refers to the plotted mean value of a specific subgroup (in other words, it is the mean of the samples associated with the subgroup). The '.Avg' statistic, on the other hand, refers to the running average of all subgroups for that variable.

  16. questionHow do I setup unilateral specifications in WinSPC?
    Not all variable characteristics have both an upper and lower specification limit. In some cases, you might only have an upper or lower specification limit that you need to adhere to. One example of this might be if you are performing destructive testing, such as a pressure test. Imagine that ...

  17. questionHow can I quickly import a list of data values into WinSPC?
    Importing raw data can be done in just a few clicks. WinSPC can import raw data from an ordinary text file into a single variable. Raw data is, as the name suggests, only sample data readings. This means that it does not contain any other information; like variable names, product specificati ...

  18. questionHow are control limits calculated for an attribute c-chart?
    A c-chart displays the total number of nonconformities for each lot. This chart is available in WinSPC to an attribute that is configured with an 'Attribute Counts' of 'Defects' (also referred to as a 'Defect List') and an 'Inspection Lot Size' set to 'Fixed' (a c-chart requires a constant lot ...

  19. questionHow are control limits calculated for an attribute u-chart?
    A u-chart displays the number of nonconformities per unit produced. This chart is available in WinSPC to an attribute that is configured with an 'Attribute Counts' of 'Defects' (also referred to as a 'Defect List'). An attribute displaying a u-chart in WinSPC (configured to recalculate the cont ...

  20. questionHow are control limits calculated for an attribute np-chart?
    An np-chart displays the number of nonconforming (defective) units. This chart is available in WinSPC to an attribute that is configured with an 'Attribute Counts' of 'Defective Units' and an 'Inspection Lot Size' of 'Fixed' (an np-chart requires that the lot size be constant). An attribute dis ...

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