Table 5 RE of stratified and proposed calibrated memory-type ratio estimators at various values of ρ, smoothing parameters \(\:\lambda\:=0.25,\:0.50,\:0.75,\) and sample sizes \(\:n\).
From: Innovative memory-type calibration estimators for better survey accuracy in stratified sampling
ρ | n | Relative efficiency | ||
|---|---|---|---|---|
λ = 0.25 | λ = 0.50 | λ = 0.75 | ||
0.05 | 10 | 124.36 | 127.80 | 128.02 |
20 | 136.00 | 131.75 | 125.48 | |
30 | 114.50 | 130.75 | 126.07 | |
50 | 136.00 | 127.80 | 128.00 | |
200 | 68.00 | 158.00 | 144.50 | |
0.25 | 10 | 146.30 | 142.88 | 147.71 |
20 | 147.80 | 142.25 | 147.09 | |
30 | 165.33 | 141.63 | 147.43 | |
50 | 145.00 | 137.20 | 155.88 | |
200 | 73.00 | 171.00 | 155.50 | |
500 | 29.00 | 68.00 | 123.00 | |
0.50 | 10 | 178.44 | 168.59 | 173.08 |
20 | 161.00 | 170.00 | 175.42 | |
30 | 178.67 | 177.00 | 171.85 | |
50 | 156.50 | 189.75 | 167.00 | |
200 | 80.00 | 188.00 | 166.00 | |
0.75 | 10 | 799.89 | 169.54 | 202.11 |
20 | 220.25 | 170.36 | 200.00 | |
30 | 190.33 | 177.71 | 204.25 | |
50 | 170.50 | 187.75 | 206.57 | |
0.95 | 10 | 224.87 | 234.67 | 233.88 |
20 | 225.50 | 236.56 | 239.12 | |
30 | 205.33 | 238.50 | 233.27 | |
50 | 181.50 | 212.75 | 254.17 | |
