The Sample Adequacy tab is used to create and manage sample data and to review TOPS data items. There are only two sections on this tab: Sample Adequacy and Maintenance. 

Icons

Each icon on the tab leads to an interface. These icons/interfaces and their specific roles are listed below by section. 

Sample Adequacy 

The following tools are provided under the Sample Adequacy group:

1. -- Create TOPS: Opens the interface which is used to create a Table of Potential Samples (TOPS) data table based on the data in a HPMS Data Table. All other interfaces cannot be used until this step is performed.
2. -- Adjust TOPS: Opens the interface which is used to merge small segments together based on TOPS items.
3. -- Split Sample by TOPS: Opens the interface which is used to split a sample based on breaks in any of the TOPS data items (AADT, Facility Type, Functional Class, Through Lanes, and Urban Code).
4. -- Check Adequacy: Opens the interface which is used to view the number of unsampled TOPS sections, required samples, and current samples for each Sample Panel (Functional System, Volume Group, and Urban Area stratum). 
5. -- Potential Samples: Opens the interface which is used to identify and add samples.
6. -- Expansion Factors: Opens the interface which is used to calculate and view expansion factors for Sample Panels.
7. -- Sample Risk Analysis: Opens the interface which is used to review current Samples Panels for samples that are at risk of moving to a higher or lower volume group.
8. -- Delete Samples: Open the interface which is used to review samples from the sample panel.

Maintenance

The following tools are provided under the Maintenance group:

1. -- Precision Level: Open the interface which is used to edit the Confidence Level and Precision Rate values used in the Check Adequacy interface.