t1way | R Documentation |
The t1way
function computes a one-way ANOVA on trimmed means. Homoscedasticity assumption not required. It uses a generalization of Welch's method. Corresponding post hoc tests can be performed using lincon
.
t1way(formula, data, tr = 0.2, alpha = 0.05, nboot = 100, ...)
lincon(formula, data, tr = 0.2, alpha = 0.05, method = "hochberg", ...)
formula |
an object of class formula. |
data |
an optional data frame for the input data. |
tr |
trim level for the mean. |
alpha |
alpha level for CI computation. |
nboot |
number of bootstrap samples for effect size CI computation. |
method |
method to correct the p-value (see |
... |
currently ignored. |
In the post hoc computations, confidence intervals and p-values are adjusted to control FWE. The default for the p-values is to use Hochberg's 1988 sharper Bonferroni procedure.
t1way
returns an object of class "t1way"
containing:
test |
value of the test statistic (F-statistic) |
df1 |
degrees of freedom |
df2 |
degrees of freedom |
p.value |
p-value |
effsize |
explanatory measure of effect size |
effsize_ci |
boostrap effect size CI |
call |
function call |
lincon
returns an object of class "mcp1"
containing:
comp |
inference for all pairwise comparisons |
fnames |
names of the factor levels |
linconv2
returns an object of class "linconv2"
containing:
Wilcox, R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Elsevier.
med1way
,t1waybt
set.seed(123)
t1way(libido ~ dose, data = viagra)
## post hoc tests
lincon(libido ~ dose, data = viagra)
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