cor.rv | R Documentation |
var.rv
, cov.rv
and cor.rv
compute the distribution of
the variance statistic of x and the distribution of the covariance statistic
or the correlation statistic of x and y if these are vectors. If x and y
are matrices then the covariances (or correlations) between the columns of x
and the columns of y are computed.
cor.rv(x, y = NULL, ...) cov.rv(x, y = NULL, ...) sd.rv(x, na.rm = FALSE) var.rv(x, ...)
x |
a numeric or random vector, matrix, or a data frame |
y |
|
... |
arguments passed to stats::var |
na.rm |
logical. Should missing values be removed? |
These functions are compatible with both numeric and rv objects. To
make your code compatible with rv
objects, use e.g. sd.rv
instead of sd
.
The functions cov.rv
is implemented by applying the corresponding
numerical function to the rows of the simulation matrices of x
and
y
and forming a new rv
object from the resulting vector of
simulations. Alternatively x
may be a random matrix (and y
NULL
). %Then the numerical function cov
.
cor.rv
works similarly, but returns the distribution of the
correlation statistic (i.e. function).
var.rv
computes the distribution of the variance statistic.
sd.rv
is the square root of the result obtained by var.rv
.
A random vector or array.
Jouni Kerman jouni@kerman.com
Kerman, J. and Gelman, A. (2007). Manipulating and Summarizing Posterior Simulations Using Random Variable Objects. Statistics and Computing 17:3, 235-244.
See also vignette("rv")
.
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