prop: Proportion of observations by group
In jrnold/rubbish: Miscellaneous functions

prop calculates the proportion of observations by group. This is analaguous to count which counts the number of rows by group. Alternatively, count is to table as prop is to prop.table.

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prop(x, ..., wt = NULL, sort = FALSE)

prop_(x, vars, wt = NULL, sort = FALSE)

`x`	A `tbl`.
`wt`	If omitted, will the number of rows. If specified, will perform a "weighted" proportion by summing the (non-missing) values of variable `wt`.
`sort`	If `TRUE`, sort output in descending order of `n`.
`vars, ...`	Variables to group by