Table 5 Percent relative efficiencies of \(\overline{y}_{ds}\), \(\hat{\overline{Y}}_{R}^{ds}\), \(\hat{\overline{Y}}_{{\text{Re}}}^{ds}\), \(\hat{\overline{Y}}_{{\text{Re}}}^{*}\), \(\hat{\overline{Y}}_{Rd}^{*}\), \(\hat{\overline{Y}}_{Rpd}^{*}\) and \(\hat{\overline{Y}}_{CRe}^{ds}\) with respect to \(\overline{y}_{ds}\) for unequal strata size.

From: Improved exponential type ratio estimator in double sampling for stratification

Estimators

Percent relative efficiency

Population 1

Population 2

Population 3

\(\overline{y}_{ds}\)

100.00

100.00

100.00

\(\hat{\overline{Y}}_{R}^{ds}\)

228.17

124.69

262.03

\(\hat{\overline{Y}}_{{\text{Re}}}^{ds}\)

93.90

102.30

96.342

\(\hat{\overline{Y}}_{{\text{Re}}}^{*}\)

152.24

106.74

130.06

\(\hat{\overline{Y}}_{Rd}^{*}\)

222.79

114.03

169.78

\(\hat{\overline{Y}}_{Rpd}^{*}\)

92.49

108.94

105.23

\(\hat{\overline{Y}}_{{C{\text{Re}} }}^{ds}\)

325.85

126.06

360.46

  1. Significant values are in bold.