calc_shares: Calculate the weighted share of an answer item

In mbannert/gateveys2: Aggregate Survey Data

Description

This function calculates how often an answer item was selected relatively to the other answer item of a question. The result is given as a share. Besides the function calculates additional information that is described in greated detail below.

Usage

  calc_shares(dt, var, sizeColumn)

Arguments

dt	a data.table containing the entire relevant data
var	a character representation denoting a particular column of the data.table given in dt. Typically this column represents a qualitative question. The columns of the data.table to which var refers were tested for factor, integer and character columns.
sizeColumn	a character representation of the data.table column that holds the quantitative weight. If you want to aggregate without weighting hand a vector of 1s which is equal to nrow(dt).

Value

returns a data table that consists of the following columns: - all columns that were keys of the input data.table (this varies depending on the input) typically this is: time, group, question - sumTest: sum of all employees working in key group that chose a particular answer item - sumTestTotal: sum of all employees working in a key sector - AN: number of participants in the key group that chose a particular answer item - ANTot: number of participants in the key group - share: weighted share, sumTest/sumTestTotal

Author(s)

Matthias Bannert

mbannert/gateveys2 documentation built on May 21, 2019, 2:23 p.m.