DETERMINATION OF SAMPLE SIZE BASED ON ALPHA AND BETA RISKS

Sampling theory is often used in the evaluation of Traffic Safety Deomonstration Programs. This report sets forth a set of sampling tables that can be used by an experiment designer who has a knowledge of sampling theory. A sample size formula is presented which uses both Alpha and Beta levels. The "Power of the Test" is used to determine sample size and what tradeoffs can be made in sample size by varying the requirements of Type I and Type II errors. An appendix is also included.

• Corporate Authors:

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Surti, J
  • LEVY, P
• Publication Date: 1976-3

Media Info

• Features: Appendices; Tables;
• Pagination: 10 p.

Subject/Index Terms

• TRT Terms: Alpha rays; Beta rays; Demonstration projects; Sampling; Statistical sampling; Tables (Data); Traffic safety
• Uncontrolled Terms: Sample size
• Old TRIS Terms: Alpha particles; Beta particles
• Subject Areas: Data and Information Technology; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00150430
• Record Type: Publication
• Report/Paper Numbers: DOT HS-801 899
• Files: TRIS, USDOT
• Created Date: Apr 27 1977 12:00AM