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Define outputs

Every design type built in the Create Design builder asks for its outputs on the same page, headed Define outputs (responses). You reach it again on an existing design with QXL DOE New > Modify Design > Add/Remove, Change Name/Type. The Design Wizard has its own version, headed Define outputs (optional).

What is genuinely shared is the per-output row, the name, the Type: list and the weights checkbox. The page around it is not:

Reached from What else is on the page
the Create Design builder the Design format choice, and the stacked-replicates note
the Design Wizard neither. The wizard puts Design format on its previous page, the replicates and blocks page
Modify Design > Add/Remove, Change Name/Type neither. The format of an existing design is changed with the two Convert From commands instead

Define outputs (responses) asks for the number of outputs in Select number of outputs:, a list of 1 to 20, and then shows one block per output with Name:, Type: and a checkbox. Type: offers Quantitative, Binary and Nominal. The checkbox reads Has weights column for a quantitative or nominal output and Events / Sample size for a binary one, and it is available only when the design format is Stacked.

The same page carries the Design format choice, Stacked or Table, which decides how replicates are laid out on the sheet. While Table is selected the page shows a note beside the format choice: Weights and sample size columns are only available with stacked replicates. The note is hidden while Stacked is selected.

The three output types

Type: offers exactly three, and the choice decides which regression runs later.

Type What the column holds Analysis it gets
Quantitative a measured number Ordinary Least Squares Regression
Binary one of two outcomes Binary Logistic Regression
Nominal one of three or more unordered outcomes Nominal Logistic Regression

There is no ordinal output type. See Types of Outputs.

The weights checkbox

The checkbox under Type: changes its wording with the type, because it adds a different column in each case:

Type Checkbox reads What it adds
Quantitative Has weights column a column of weights, used to weight the regression
Nominal Has weights column a column of weights
Binary Events / Sample size two columns, the number of events and the number of trials per run

It is available only when the design format is Stacked. Choosing Table greys the checkbox out and no weights column is written, though a box already ticked stays visibly ticked. While Table is selected the page shows a note beside the format choice: weights and sample size columns are only available with stacked replicates.

Design format

Stacked and Table decide how a replicated design is laid out on the worksheet, and they are the same two formats the ribbon can convert between afterwards with Modify Design > Convert From Table To Stacked and Convert From Stacked To Table. See Stacked vs. Table.

Defaults and validation

A new output arrives named Output 1, typed Quantitative, with the checkbox clear. The only check on this page is that the name is not blank: an empty name gives Output name cannot be empty.

See Also