Analysis of tomato root initiation using a normal mixture distribution. Academic Article uri icon

abstract

  • We attempt to identify the number of underlying physical phenomena behind tomato lateral root initiation by using a normal mixture distribution coupled with the Box-Cox power transformation. An initial analysis of the data suggested the possibility of two (possibly more) subpopulations, but upon taking reciprocals, the data appear to be very nearly Gaussian. A simulation study explores the possibility of erroneously detecting a second subpopulation by fitting data which are improperly scaled. A power calculation suggests that only unrealistically large sample sizes can detect the unbalanced mixtures one might expect with data of this type.

published proceedings

  • Biometrics

author list (cited authors)

  • Gutierrez, R. G., Carroll, R. J., Wang, N., Lee, G. H., & Taylor, B. H.

citation count

  • 26

complete list of authors

  • Gutierrez, RG||Carroll, RJ||Wang, N||Lee, GH||Taylor, BH

publication date

  • December 1995

publisher