Contract Observations into Unique Values and Counts

 

Menu location: Data_Organizing_Contract.

 

This function takes a list of values recorded repeatedly for different observations and contracts them into a list of unique observations along with counts of the numbers of times each value was observed.

 

This list can be expanded again by using the Data_Organizing_Expand function.

 

Example

 

The following measurement was observed on 12 subjects but only 5 different values were recorded:

 

Measurement
0.1
0.3
0.3
0.3
0.5
0.5
0.5
0.5
0.5
0.7
0.7
1.0

 

In order to contract this list into a set of unique observations and counts choose Contract from the Organizing section of the Data menu.

 

For this example:

 

Measurement	Counts
0.1	1
0.3	3
0.5	5
0.7	2
1.0	1