bws2Dataset {RcmdrPlugin.BWS2}

Create Data Set for BWS2 Analysis

Description

Create a data set for BWS2 analysis combining the choice sets and data set containing responses to BWS2 questions.

Details

This dialog box uses the function bws2.dataset in support.BWS2 to create a data set for BWS2 analysis combining the choice sets designed in the ‘Design Choice Set for BWS2’ dialog box and a data set containing responses to BWS2 questions. For details on the results of this dialog box, refer to help for the function bws2.dataset.

GUI elements of this dialog box are as follows.

• Name for data set: An R object name into which a data set generated using this dialog box is stored. The default name ‘BWS2data’ can be changed following R's rules for naming objects. If changed, you should take note of the new object name, which will be used later.

• Save to file: A check box for saving the resultant data set to an external file in RDA format (.rda). If necessary, check this box.

• Design: An R object name containing BWS2 choice sets generated in the ‘Design Choice Set for BWS2’ dialog box. The default name ‘BWS2design’ is displayed automatically. The correct name should be entered if the name of BWS2 choice sets (BWS2design) was changed in the dialog box for BWS2 design.

• Attributes and levels: An R object name containing attributes and their levels set in the ‘Design Choice Set for BWS2’ dialog box. The object name ‘BWS2attributes’ cannot be changed (A fixed variable is colored in green).

• ID variable: A variable name identifying respondents. The default name ‘id’ can be changed according to the corresponding variable name in the active data set.

• Model type: Type of model used for the analysis. Select one from three radio buttons corresponding to ‘Paired model’, ‘Marginal model’, and ‘Marginal sequential model’. See help for the function bws2.dataset for details on three models.

• Reverse attribute variables: A check box to indicate when the signs of the attribute variables are reversed for the possible worst.

• Base attribute: The base attribute when attribute variables are created as effect-coded variables. No variable is selected when attribute variables are created as dummy coded variables.

• Base level for X: the base level in attribute X when level variables are created as effect-coded variables. No variable is selected when level variables are created as dummy coded variables.

• Number of BWS2 questions: Number of BWS2 questions per respondent. According to the design parameters set in the ‘Design Choice Set for BWS2’ dialog box, this slider is set at the appropriate number. Depending on the number, the number of rows of the ‘Names of best- and worst-response variables’ table varies.

• Letters of best- and worst-response variables: A type of letters used for best- and worst-variable names shown in the ‘Names of best- and worst-variable names’ table. Select one from three radio buttons corresponding to ‘Uppercase’, ‘Lowercase’, and ‘None’. According to the selection, letters of best- and worst variable names in the table are changed. When selecting ‘None’, no variable names appear in the table. Users must type appropriate names in each cell of the table.

• Names of best- and worst-response variables: Names of best- and worst-response variables stored in the active data set. These names must follow R's rules for naming variables.

Please click the ‘Cancel’ button and open this dialog box again if it does not work as expected.