Description Usage Arguments Details Value Author(s) References Examples
Computes income share of the top p %.
1 | r.is(x, p)
|
x |
the vector of income |
p |
the order of quantile. Must be in [0,1] as probability |
The most popular measure of richness which takes a form:
R^{IS}(\mathbf{x},p)=\frac{∑_{i=1}^n x_i \mathbf{1}_{x_i>q_{1-p}}}{∑_{i=1}^n x_i},
where q_{1-p} is the (1-p) quantile of the population and \mathbf{1} denotes the indicator function, which is equal to 1 when its argument is true and 0 otherwise. There is always p % of rich units in the population.
the value of index
Alicja Wolny-Dominiak, Anna S<b1>czewska-Piotrowska
Brzezi<f1>ski M. (2010) Income affluence in Poland. Social Indicators Research, 99, pp. 285-299.
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