Description Usage Arguments Details Value References
Algorithms III and IV from Wright (2017), and classical (unconstrained)
Neyman allocation. Algorithm III finds the optimial allocation for a
given total sample size n
. Algorithm IV samples until the overall
variance is smaller than a given v0
.
1 2 3 4 5 6 7 |
n |
Target sample size for Algorithm III (integer) |
N_str |
Population size for each stratum (integer vector) |
S_str |
Standard deviation for each stratum (numeric vector) |
lo_str |
Sample size lower bounds for each stratum (numeric vector) |
hi_str |
Sample size upper bounds for each stratum (numeric vector) |
verbose |
Print detailed information for each selection (boolean) |
v0 |
Target variance for Algorithm IV (numeric) |
Global options for the package (with defaults) are:
options(allocation.prec.bits = 256)
Number of bits of
precision to use with mpfr
objects in internal calculations.
options(allocation.print.decimals = 4)
Number of decimals
to display in output.
options(allocation.algIV.tol = 1e-10)
A small positive
number for use in algIV; if all strata have V_str <= tol
,
no more allocation is possible, even if target value v0
has
not yet been attained.
An object which contains the results; the structure depends on allocation method.
Tommy Wright (2012). The Equivalence of Neyman Optimum Allocation for Sampling and Equal Proportions for Apportioning the U.S. House of Representatives. The American Statistician, 66, pp.217-224.
Tommy Wright (2017), Exact optimal sample allocation: More efficient than Neyman, Statistics & Probability Letters, 129, pp.50-57.
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