| Double sampling for ratio and regression estimation with sub-sampling the non-respondents FC Okafor, H Lee Survey Methodology 26 (2), 183-188, 2000 | 155 | 2000 |
| Sample survey theory with applications FC Okafor Afor-Orbis Publications Ltd, Nsukka, Nigeria, 2002 | 78 | 2002 |
| Treatment of non-response in successive sampling FC Okafor Statistica 61 (2), 195-204, 2001 | 36 | 2001 |
| The theory and application of sampling over two occasions for the estimation of current population ratio FC Okafor Statistica 52 (1), 137-147, 1992 | 36 | 1992 |
| Some Strategies of Two‐Stage Sampling for Estimating Population Ratios Over two Occasions FC Okafor, R Arnab Australian Journal of Statistics 29 (2), 128-142, 1987 | 36 | 1987 |
| A note on double sampling over two occasions R Arnab, FC Okafor Pakistan Journal of Statistics 8 (3), 9-18, 1992 | 24 | 1992 |
| Sub-sampling the non-respondents in two-stage sampling over two successive occasions FC Okafor Quality control and applied statistics 52 (2), 173-174, 2007 | 18 | 2007 |
| On Double Sampling for Stratification with Sub-Sampling FC Okafor Jour. Ind. Soc. Ag. Statistics 48 (1), 105-113, 1996 | 13 | 1996 |
| A class of ratio-type estimator using two auxiliary variables for estimating the population mean with some known population parameters TJ Akingbade, FC Okafor Pakistan Journal of statistics and operation research, 329-340, 2019 | 11 | 2019 |
| Comparison of estimators of population total in two-stage successive sampling using auxiliary information FC Okafor Survey Methodol 13 (1), 109-121, 1987 | 9 | 1987 |
| Treatment of unit non-response in two-stage sampling with partial replacement of units FC Okafor Statistica 64 (3), 511-521, 2004 | 4 | 2004 |
| RATIO‐TO‐SIZE ESTIMATORS OF MEAN PER SUBUNIT IN TWO‐STAGE SAMPLING OVER TWO OCCASIONS FC Okafor Australian Journal of Statistics 30 (3), 367-378, 1988 | 4 | 1988 |
| Sub-Sampling The Non-Respondents in Two-Stage FC OKAFOR | | |
| Échantillonnage à deux phases pour l’estimation par quotient ou par régression avec souséchantillonnage des nonrépondants FC Okafor, H Lee a a 1, 1, 0 | | |
