Fisher ideal quantity index. — q

The Fisher ideal index takes the geometric mean of the Paasche and the Laspeyre indices. If there are m countries and n goods, the data are (m x n) matrices.

Usage

q_fisher(P, Q)

Arguments

P: An m x n matrix of prices (row country, column goods).
Q: An m x n matrix of quantities (row country, column goods).

Value

an m x m matrix of country pair comparisons.

Examples

Pt <- matrix(1:6, ncol = 2)
Qt <- matrix(2:7, ncol = 2)
q_fisher(Pt,Qt)
#>          [,1]     [,2]      [,3]
#> [1,] 1.000000 0.810172 0.6770032
#> [2,] 1.234306 1.000000 0.8352691
#> [3,] 1.477098 1.197219 1.0000000