Mean survey cost per EA by region for bfa_eas. Conflict-affected regions (Sahel, Est) have higher costs. Used for demonstrating optimal (cost-variance) allocation.
Format
A tibble with 13 rows and 2 columns:
- region
Factor. Region name
- cost
Numeric. Mean per-EA survey cost (thousands FCFA)
Examples
# View the cost data
bfa_eas_cost
#> # A tibble: 13 × 2
#> region cost
#> <fct> <dbl>
#> 1 Boucle du Mouhoun 483
#> 2 Cascades 427
#> 3 Centre 240
#> 4 Centre-Est 400
#> 5 Centre-Nord 444
#> 6 Centre-Ouest 399
#> 7 Centre-Sud 418
#> 8 Est 631
#> 9 Hauts-Bassins 358
#> 10 Nord 583
#> 11 Plateau-Central 408
#> 12 Sahel 639
#> 13 Sud-Ouest 416
# Optimal allocation minimizes variance for fixed total cost
sampling_design() |>
stratify_by(region, alloc = "optimal",
variance = bfa_eas_variance,
cost = bfa_eas_cost) |>
draw(n = 200) |>
execute(bfa_eas, seed = 1)
#> # A tbl_sample: 200 × 17
#> # Weights: 74.67 [60.55, 107.25]
#> ea_id region province commune urban_rural population households area_km2
#> * <chr> <fct> <fct> <fct> <fct> <dbl> <int> <dbl>
#> 1 EA_10182 Boucle … Mouhoun Ouarko… Rural 1347 185 33.0
#> 2 EA_03982 Boucle … Kossi Doumba… Rural 1558 191 16.6
#> 3 EA_10352 Boucle … Bale Ouri Rural 767 98 17.6
#> 4 EA_03209 Boucle … Mouhoun Dedoug… Rural 446 79 18.1
#> 5 EA_12908 Boucle … Banwa Tansila Rural 1076 129 9.45
#> 6 EA_11640 Boucle … Banwa Sami Rural 912 137 43.2
#> 7 EA_06884 Boucle … Banwa Kouka Rural 1642 226 12.5
#> 8 EA_13757 Boucle … Nayala Toma Rural 973 141 0.88
#> 9 EA_05785 Boucle … Sourou Kassoum Rural 1315 195 1.5
#> 10 EA_03598 Boucle … Kossi Djibas… Rural 725 93 1.01
#> # ℹ 190 more rows
#> # ℹ 9 more variables: accessible <lgl>, dist_road_km <dbl>,
#> # food_insecurity_pct <dbl>, cost <dbl>, .weight <dbl>, .sample_id <int>,
#> # .stage <int>, .weight_1 <dbl>, .fpc_1 <int>