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Chapter 7 Reshaping Data 223
Creating a Subset Data Table
Creating a Subset Data Table
You can produce a new data table that is a subset of all rows and columns, only highlighted rows and
columns, or randomly selected rows from the active data table.
To create a subset:
1 Select Tables > Subset. The window in Figure 7.1 appears.
Figure 7.1 The Subset Window
7 Reshaping Data
2 Select a row option from the list:
– All Rows Creates a subset table that contains all rows from the active table.
– Selected Rows Creates a subset table that contains only the selected rows from the active
table.
– Random - sampling rate Creates a subset table whose data is a random proportion of the
active data table. Enter the proportion of the sample you want in the text box. For example, if
you want a random 50% of the data to be included in the new table, enter 0.5 in the text box.
– Random - sample size Creates a subset table whose data is a random sample of the active data
table. Enter the size of the sample you want in the text box. For example, if you want 16 random
rows to be included in the new table, enter 16 into the text box.
Note: If you select a random sample that is the entire source table, the result is a random shuffle of the
rows of the data table. If Stratify columns are specified, the result is a random shuffle of each of the rows
for each group.
3 Select a column option from the list:
– All columns Creates a subset table that contains all columns from the active table.