KNOWLEDGEBASE - ARTICLE #1890
How does Prism define a family of sheets?
Prism lets you save just a family of sheets or duplicate the current sheet with its family. So that begs the question of how a family of sheets is defined.
Note: Prism also does multiple comparisons after one- or two-way ANOVA, with a multiple comparisons correction so the probability alpha applies to the entire family of comparisons. This use of the word family in multiple comparisons has nothing to do with a family of sheets.
A family is the sheet you are looking at and all sheets directly related to that sheet. So if you are looking at a graph, the family includes the data table(s) plotted on that graph, any analyses included on that graph as curves or embedded results tables, and any layout(s) that include that graph.
There are two possible ambiguities:
- A graph can contain data from two more more data tables. If you start from the graph (and save or duplicate its family), both (all) those tables are part of the family. If you start from only one of those tables, the other table(s) are not part of the family.
- Info sheets can either be declared to be linked to a particular data table or to be global to the entire project. Prism includes an info table when you first create a new project file, and this info table belongs to the project and is not linked to the first data table. To choose, go to the table, drop the Change menu and choose "Link to data table". If an info table is linked to a data table, then it is part of any family that includes that table. If the info table is not linked to a particular data table, then it will not be part of any sheet's family -- with one exception. The exception is that when the project contains only a single info table, and all the other sheets in that project are linked to be part of a single family, then that info table is defined to be part of that family too.