- formula
A formula indicating the response variable and
the independent variable. e.g. y ~ group.
- data
The data frame to use.
- x
If no formula is given, the response variable for one group.
- y
The response variable for the other group.
- test
The statistic to compare between groups. Can be
"median"
, "percentile"
, "iqr"
,
"proportion"
,
"mean"
, or "variance"
.
- tau
If "percentile"
is chosen as the test
,
tau
indicates the percentile to test. Expressed
as a quantile. That is, 0.5 indicates a test for medians.
0.75 indicates a test for 75th percentiles.
- type
The type
value passed to the quantile
function.
- threshold
If "proportion"
is chosen as the test
,
threshold
indicates the value of the dependent variable
to use as the threshold. For example, to test if there is a
different in the proportion of observations below $10,000,
threshold = 10000
would be used.
- comparison
If "proportion"
is chosen as the test
,
comparison
indicates the inequality to use. Options are
"<"
, "<="
, ">"
, ">="
, or , "=="
- r
The number of replicates in the permutation test.
- digits
The number of significant digits in the output.
- progress
If TRUE
, prints a dot for every 1 percent of
progress while conducting the test.