Note: This module requires that one or more columns of data that are already listed in the STATDISK data window
If the column(s) of data is not already there, close this window and enter or open data sets so that they are listed in a column of the STATDISK Data Window. (To open a data set from Appendix B in the textbook, click on "Datasets" at the top. To manually enter a data set, click on Data, then click on Sample Editor. The data can also be copied into STATDISK from another application, such as Minitab or Excel.)
This module creates new data sets by mathematically altering existing data sets. The new data will thus have a known correlation with the original data.
First identify the "Source column," which is the column in the STATDISK Data Window. Select the operation:
If you want to transform the source column using the same constant, select the "Constant" button.
If you want to transform the source column using values from another column, select the second column.
To get the square root of values in a column, select Pwr and enter a constant of 0.5.
To add column 1 to column 2, use + with column 1 and column 2.
You can perform an advanced transformation by typing a valid transformation equation in the 'Equation' field and then clicking the 'Adv. Transform' button.
Valid transformation equations consist of using Operators or Functions in combination with Column data.
Note: Using either transformation, the result can be copied to the STATDISK Data Window, and the result can be saved.