meanT

0th

Percentile

Mean t-Statistic Between Two Groups of Growth Curves

The mean-t statistic of the distance between two groups of growth curves.

Keywords
regression
Usage
meanT(y1, y2)
Arguments
y1
matrix of response values for the first group, with a row for each individual and a column for each time. Missing values are allowed.
y2
matrix of response values for the second group. Must have the same number of columns as y1. Missing values are allowed.
Details

This function computes the pooled two-sample t-statistic between the response values at each time, and returns the mean of these values weighted by the degrees of freedom. This function is used by compareGrowthCurves.

Value

• numeric vector of length one containing the mean t-statistic.

compareGrowthCurves, compareTwoGrowthCurves

• meanT
Examples
y1 <- matrix(rnorm(4*3),4,3)
y2 <- matrix(rnorm(4*3),4,3)
meanT(y1,y2)

data(PlantGrowth)
compareGrowthCurves(PlantGrowth$group,as.matrix(PlantGrowth$weight))
# Can make p-values more accurate by nsim=10000
Documentation reproduced from package statmod, version 0.6, License: GPL version 2 or newer

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