Value Outlier Treatment

For this treatment, an outlier is an attribute with a value that is greater than the Upper Value or less than the Lower Value. The wizard provides defaults for the upper and lower values, which you can change.

You must also specify what value to replace outliers with. You can either replace outliers with NULL (that is, "throw the values away") or you can replace the values with edge values. In the example above, the edge values are Upper Value and Lower Value. If you specify Replace with edge values and if the value of an attribute is greater than Upper Value, that value is replaced with Upper Value; values less than Lower Value are replaced with Lower Value. The default is to Replace with nulls.

When you are done defining the treatment, click OK.