Computes \(\mathrm{Var}(Z_x) = {}^{2}A_x - A_x^2\).
Usage
var_Ax(x, i, tbl = NULL, model = NULL, ..., tol = 1e-12, k_max = 5000)
Arguments
- x
Age.
- i
Effective annual interest rate.
- tbl
Optional life table object.
- model
Optional parametric survival model name.
- ...
Additional arguments passed to survival-model functions.
- tol
Numerical tolerance for truncating infinite sums.
- k_max
Maximum number of terms in the sum.
Value
Numeric vector of variances.