matrixTests (version 0.2.2)

oneway: Oneway ANOVA

Description

Performs an analysis of variance tests on each row/column of the input matrix.

Usage

row_oneway_equalvar(x, g)
col_oneway_equalvar(x, g)
row_oneway_welch(x, g)
col_oneway_welch(x, g)

Value

a data.frame where each row contains the results of an oneway anova test performed on the corresponding row/column of x. The columns will vary depending on the type of test performed.

They will contain a subset of the following information:

1. obs.tot - total number of observations

2. obs.groups - number of groups

3. sumsq.between - between group (treatment) sum of squares

4. sumsq.within - within group (residual) sum of squares

5. meansq.between - between group mean squares

6. meansq.within - within group mean squares

7. df.between - between group (treatment) degrees of freedom

8. df.within - within group (residual) degrees of freedom

9. statistic - F statistic

10. pvalue - p.value

Arguments

x

numeric matrix.

g

a vector specifying group membership for each observation of x.

Author

Karolis Koncevičius

Details

Functions to perform ONEWAY ANOVA analysis for rows/columns of matrices.

row_oneway_equalvar(x, g) - oneway ANOVA on rows. col_oneway_equalvar(x, g) - oneway ANOVA on columns.

Results should be the same as running aov(x ~ g) on every row (or column) of x

row_oneway_welch(x, g) - oneway ANOVA with Welch correction on rows. col_oneway_welch(x, g) - oneway ANOVA with Welch correction on columns.

Results should be the same as running oneway.test(x, g, var.equal=FALSE) on every row (or column) of x

See Also

aov(), oneway.test()

Examples

col_oneway_welch(iris[,1:4], iris$Species)
row_oneway_equalvar(t(iris[,1:4]), iris$Species)