concstats_grs {concstats}

GRS measure

Description

GRS measure

Usage

concstats_grs(x, na.rm = TRUE)

Arguments

x

A non-negative numeric vector.

na.rm

a logical vector that indicates whether NA values should be excluded or not. Must be either TRUE or FALSE. The default is TRUE. If set to FALSE the computation yields NA if vector contains NA values.

Value

A single numeric measure in decimal form.

References

Ginevicius, R. and S. Cirba (2009). "Additive measurement of market concentration", Journal of Business Economics and Management, 10(3), 191-198.

Examples

# a vector of market shares
x <- c(0.4, 0.2, 0.25, 0.1, 0.05)
concstats_grs(x)
# a vector with NA values
x <- c(0.4, 0.2, 0.25, 0.1, 0.05, NA)
concstats_grs(x, na.rm = FALSE)