Most operations of StatistX are performed on columns. In order
to start any of the operations select one or more columns and chose a menu
option afterwards. Click on the label to select a certain column. Use the
menu options "/Edit/Select all" and "/Edit/Unselect all" to select (or
unselect) all columns at once.
StatistX will notify you in case you selected to few or to many columns
for a particular operation.
Have fun!