calcium                 package:boot                 R Documentation

Calcium Uptake Data

Description:

     The 'calcium' data frame has 27 rows and 2 columns.

     Howard Grimes from the Botany Department, North Carolina State
     University, conducted an experiment for biochemical analysis of
     intracellular storage and transport of calcium across plasma
     membrane.  Cells were suspended in a solution of radioactive
     calcium for a certain length of time and then the amount of
     radioactive calcium that was absorbed by the cells was measured. 
     The experiment was repeated independently with 9 different times
     of suspension each replicated 3 times.

Usage:

     calcium

Format:

     This data frame contains the following columns:

     'time' The time (in minutes) that the cells were suspended in the
          solution.

     'cal' The amount of calcium uptake (nmoles/mg).

Source:

     The data were obtained from

     Rawlings, J.O. (1988) _Applied Regression Analysis_.  Wadsworth
     and Brooks/Cole Statistics/Probability Series.

References:

     Davison, A.C. and Hinkley, D.V. (1997)  _Bootstrap Methods and
     Their Application_. Cambridge University Press.

