Jackknife Dialog Functions

DESCRIPTION:

These functions are used by the Jackknife dialog. menuJackknife calls tabSummary.jackknife and/or tabPlot.jackknife if summary and/or plotting are requested.

USAGE:

menuJackknife(data, statistic, assign.frame1, probs=c(25, 50, 950, 
     975)/1000, print.short.p=T, print.emp.p=F, print.cor.p=F, plot.p=T, 
     plotQQ.p=F, ...) 
tabSummary.jackknife(jack.obj, probs=c(25, 50, 950, 975)/1000, 
     print.short.p=T, print.emp.p=F, print.cor.p=F) 
tabPlot.jackknife(jack.obj, plot.p, plotQQ.p) 

REQUIRED ARGUMENTS:

data
data to be jackknifed. May be a vector, matrix, or data frame.
statistic
statistic to be jackknifed. It may be a function which accepts data as the first argument and returns a vector or matrix, or a call referring to the data which evaluates to a vector or matrix. If it is an expression and the data argument is the name of an object, then the object should also be referred to by name in the expression. If the data are constructed within the call to jackknife, then data should be referred to as data in the expression. (See examples for jackknife and bootstrap.)
jack.obj
an object of class jackknife

OPTIONAL ARGUMENTS:

assign.frame1
logical flag indicating whether the resampled data should be assigned to frame 1 before evaluating the statistic. This may be necessary if the statistic is reevaluating the call of a model object. If all bootstrap estimates are identical, try setting assign.frame1=T. Note that this will slow down the algorithm.
probs
probability levels at which to calculate percentiles of confidence intervals.
print.short.p
logical flag indicating whether to print basic summary statistics.
print.emp.p
logical flag indicating whether to print empirical percentiles.
print.cor.p
logical flag indicating whether to print correlation matrix of statistic if statistic is a vector.
plot.p
logical flag indicating whether to plot the replicates with plot.resamp.
plotQQ.p
logical flag indicating whether to plot a QQ-plot of the replicates with qqnorm.resamp.
...
other arguments to pass to the jackknife function.

VALUE:

menuJackknife returns an object of class jackknife. See the jackknife help files for details. tabSummary.jackknife and tabPlot.jackknife return the jack.obj.

SEE ALSO:

, , , , .

EXAMPLES:

menuJackknife(fuel.frame, var(Weight))