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Test the "Stratification Table Sufficiency"
To stratify a database we need a stratification table. Using this tool the stratification table considers all possible cases a given field may take. It examines the database and shows all values not included in the stratification table
The following example shows a database and an incomplete stratification table
Click the corresponding button to activate the Test Stratification table sufficiency function.
Choose the field to be evaluated and select the stratification table.
Finally, click on the Testing� button
A new spreadsheet with the report of the test carried out will be created, as shown in the illustration below.
As you can see, cell C7 - to name just one - contains the value 87. This value was missing in the stratification table, which only includes categories up to 70.
Once we have analyzed our data using this tool, we can modify as follows:
Now, you will be able to carry out a complete stratification of the database
Categorize Excel Data
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Test the "stratification table sufficiency"
Stratification 1 to 1
Categorize database
Time stratification
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