anova

Syntax

anova(X)

Arguments

X is a matrix or a table whose columns are all of numeric types.

Details

Conduct one-way analysis of variance (ANOVA). Each column in X is a group.

Return a dictionary with the following keys:

• pValue: p-value of the F-statistic

• fValue: F-statistic

• ssBetween: sum of squares between groups

• dfBetween: degrees of freedom between groups

• ssWithin: sum of squares within groups

• dfWithin: degrees of freedom for each group

Examples

$ a=300 287 301 400 211 399 412 312 390 412
$ b=240 259 302 311 210 402 390 298 347 380
$ c=210 230 213 210 220 208 290 300 201 201
$ m=matrix(a,b,c)
$ anova(m);

pValue->0.000515
fValue->10.15459
ssBetween->70528.066667
dfBetween->2
ssWithin->93763.4
dfWithin->27