# Missing¶

public class Missing

A missing or missing value is a value in a Variable which represents a reason why no observation (ValidResponse) has been stored. It also contains its frequency.

## Fields¶

### absoluteFrequency¶

private Integer absoluteFrequency

The absolute number of occurrences of this missing. Must not be empty.

### code¶

private String code

A (unique in this Variable) code for this missing. Must not be empty.

### label¶

private I18nString label

A label describing this missing. Must not contain more than 512 characters.

### relativeFrequency¶

private Double relativeFrequency

The quotient from absoluteFrequency and Distribution.totalAbsoluteFrequency. Must not be empty.