THE NEGATIVE EXPONENTIAL WITH CUMULATIVE ERROR.
Rept. for Jan-Aug 67,
SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX
Pagination or Media Count:
In certain tracer experiments, a biologist may inject a tagged substance in an animal and, among other things, measure the fraction of material excreted in the urine each day. Assuming the true value to be a negative exponential in time, two error models homoscedastic vs. proportional error and two methods of analysis incremental vs. cumulative are compared. The general conclusion is that one should be fairly sure which model is appropriate and should have a reasonable notion of the size of the rate constant beta relative to the length of the experimental run before attempting to estimate beta from a logarithmic transformation of the periodic increments or of the cumulative amount remaining. Author
- Anatomy and Physiology
- Radiation and Nuclear Chemistry