Statistics

This node calculates statistical moments such as minimum, maximum, mean, standard deviation, variance, median, overall sum, number of missing values and row count across all numeric columns, and counts all nominal values together with their occurrences. The dialog offers two options for choosing the median and/or nominal values calculations:

Options

Compute median values

Select this option if for all numeric columns the medians are computed. Note, this computation might be expensive, since it requires to sort all column independently to find the values that divides the distribution into two halves of the same number of values.

Column filter

Filter columns for counting all possible values.

Nominal values

Adjusts the number of counts for both, top number of frequent and infrequent occurrences of categorical values per column (displayed in the node view!).

Nominal values in output

Adjusts the maximum number of possible values per column in the nominal output table.

Views

Statistics View

Displays all statistic moments (for all numeric columns) and nominal values (for all categorical columns).

Workflows

• No workflows found

Links

• No links available

Developers