Gallagher: Gallagher index

Description

Calculates the Gallagher index.

Usage

1
Gallagher(Z,R)

Arguments

Z

Population vector

R

Vector for the representatives

Details

The representation score is calculated as: sqrt(sum((Z-R)^2)/2).

Value

Representation score

Author(s)

Didier Ruedin

References

Gallagher, M. (1991) Proportionality, disproportionality and electoral systems. Electoral Studies 10(1):33-51.

See Also

GallagherInv


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