Accession Number : AD0464183


Title :   SOME PROBLEMS ON THE USE OF NEGATIVE EXPONENTIAL CURVES IN BIOLOGY


Descriptive Note : Technical rept. Jul-Dec 1964


Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX


Personal Author(s) : Danford, M B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/464183.pdf


Report Date : Mar 1965


Pagination or Media Count : 19


Abstract : Many biologic processes give responses that decrease rapidly over time to some asymptote C = or O. The mathematical expressions that describe the various phenomena vary in complexity and form. In order to fit a curve to data in any such situation, one must consider both the formula for the trend and the nature of the deviations or error terms. A discussion of these problems is given so as to indicate to the data analyst the possible choices that are his, relative to assumptions about error terms and relative to technics or methods of estimation. No new analytical procedures are given. It is noted that several methods of estimation are being studied for certain assumed model equations. The results of these random sampling experiments will be reported in subsequent papers.


Descriptors :   *BIOLOGY , MATHEMATICAL PREDICTION , MATHEMATICAL ANALYSIS , ERRORS , STATISTICAL ANALYSIS , STATISTICAL FUNCTIONS , CURVE FITTING


Subject Categories : Biology
      Theoretical Mathematics


Distribution Statement : APPROVED FOR PUBLIC RELEASE