Description Usage Arguments Value Details See Also
Take the standard deviation across multiple columns for each row of a data.frame
1 |
data |
a |
string |
a string that can be used in |
kind |
a string indicating which type of |
a data.frame
with the newly created variable
This function, and those specified below in 'See Also', work best when used
inside a call to dplyr
's mutate()
for creating new variables.
The point of the function is to make it easy to use regular expressions to
select variables for aggregation, such as an average score for a number of
questionnaire items or the sum of correct responses.
sum_rows
for row summing, sum_missings
for summing
missing values, and average_rows
for row averaging across rows.
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