var.test: F Test.

In Fuzzy-Logix/AdapteR: Converts R syntax to SQL to provide fast analytics using in-database C++ library DB Lytix.

Description

Performs an F test to compare the variances of two samples from normal populations. The null hypothesis is that the ratio of the variances of the populations from which x and y were drawn, or in the data to which the linear models x and y were fitted, is equal to ratio.

Usage

var.test(x, ...)

Arguments

x:	FLVector of data values
y:	FLVector of data values
ratio:	the hypothesized ratio of the population variances of x and y.
alternative:	a character string specifying the alternative hypothesis, must be one of '"two.sided"' (default), '"greater"' or '"less"'.

Value

A list with class "htest".

Constraints

conf.level, ratio, formula, data aren't supported currently for FL objects.

See Also

var.test for R reference implementation.

Examples

set.seed(450)
x <- as.FLVector(rnorm(50, mean = 0, sd = 2))
y <- as.FLVector(rnorm(30, mean = 1, sd = 1))
var.test(x, y, alternative = "two.sided")

Fuzzy-Logix/AdapteR documentation built on May 6, 2019, 5:07 p.m.