Marking the Data

In order to mark data, DataLab offers several Methods:

• marking the data in the numeric table
• marking the data in the gaphical display, and
• in the scatter plot window, the transfer of inked data into the marking information.

Marking the Data in the Numeric Table

Marking the data can be performed in different windows: the numeric data editor, the window for calculating univariate descriptors, the window for calculating the frequency tables, and the window for applying statistical tests. As the principle of marking the data is equal to all windows, we describe only the data editor.

In general, the data can be marked by two different designators, called type A and B. Type A is indicated by red numbers, type B by blue ones. If a cell is marked both as type A and type B the cell is displayed in magenta color. Cells which have been marked in one window retain their mark types in all other windows.

In order to mark a particular range of cells you first have to select this range and then click one of the buttons ( or ) in the command field of the editor. Minimum and maximum, and all values above or below a threshold can also be marked by using the respective buttons in the command field.

Marking the Data by Graphic Means

The cells of the data matrix can be marked directly in various diagrams, among them the plot window, various windows of the simple and multiple regression, and in the principal component analysis window. For marking the data you have to activate the "Mark Data" button (). Thereafter you can draw a rectangle around the data to be marked. Already marked data can be unmarked by clicking the Unmark All button (). Marked data are indicated by crosses using the mark color as set in the plot options.

Hint:

Please note that DataLab always uses the type A when marking data graphically in diagrams. Markings of type B can only be applied by means of the numeric data table.