uM2pool {Umoments} | R Documentation |
Pooled central moment estimates - two-sample
Description
Calculate pooled unbiased estimates of central moments and their powers and products.
Usage
uM2pool(m2, n_x, n_y)
Arguments
m2 |
naive biased variance estimate |
n_x |
number of observations in the first group. |
n_y |
number of observations in the second group. |
Value
Pooled variance estimate.
See Also
Other pooled estimates (two-sample):
uM2M3pool()
,
uM2M4pool()
,
uM2pow2pool()
,
uM2pow3pool()
,
uM3pool()
,
uM3pow2pool()
,
uM4pool()
,
uM5pool()
,
uM6pool()
Examples
nx <- 10
ny <- 8
shp <- 3
smpx <- rgamma(nx, shape = shp) - shp
smpy <- rgamma(ny, shape = shp)
m2 <- mean(c((smpx - mean(smpx))^2, (smpy - mean(smpy))^2))
uM2pool(m2, nx, ny)
[Package Umoments version 1.0.1 Index]