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matchMulti (version 1.1.12.1)

agg: Extract School-Level Covariates

Description

Given a vector of variables of interest for students in a single school, extracts a single value for the school

Usage

agg(x)

Value

A single value of the same type as the input vector.

Arguments

x

a vector containing student-level observations for a school. If it is a factor it must contain only a single level.

Author

Luke Keele, Penn State University, ljk20@psu.edu

Sam Pimentel, University of California, Berkeley, spi@berkeley.edu

Details

If the input is numeric, agg returns the mean; if the input is not numeric, an error will be thrown unless all values are the same, in which case the single unique value will be returned.