Description Usage Arguments Value
Summarize a continuous variable by groups with mean, sd and SE
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data |
A data.frame |
measurevar |
A name of variable to measure a mean and sd |
groupvars |
Name(s) of variable used as a grouping variables |
conf.interval |
confidence interval |
na.rm |
A logical value indicating whether or not remove NA values |
.drop |
should combinations of variables that do not appear in the input data be preserved (FALSE) or dropped (TRUE, default) |
A data.frame summarized a continuous variable by groups with mean, sd and SE
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