Furthermore, several continuous and categorical auxiliary. Mixture ratio estimators using multiauxiliary variables. Generalized ratiocumproduct estimators for twophase. Generalized univariate and multivariate ratio and regression estimators for twophase and. A modified regression type estimator in survey sampling core. Table 3 indicates that the performance of the generalized exponential chain estimator is better for both populations as compared to adapted form of hansenhurwitzs estimator, modified form of stratified twophase ratio and. An empirical study is given to compare the performance of the proposed estimators with the existing estimators that utilize. See the complete profile on linkedin and discover muhammads connections and jobs at similar companies. Npi record contains foiadisclosable nppes health care provider information. The proposed estimators are the exponential function of two auxiliary variables when means of the two auxiliary variables are not known in prior. Samiuddin and hanif 14 proposed ratio and regression estimation procedures to estimate the population mean in twophase sampling using idea of partial and no information cases.
The contents on this website do not necessarily represent the views of the admins. Read generalized exponential chain ratio estimators under stratified twophase random sampling, applied mathematics and computation on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. View wasim hanifs profile on linkedin, the worlds largest professional community. Journal of culture, society and development an open access international journal vol. An alternative approach to estimation of population mean. Pdf ratio type estimator of square of coefficientof. An alternative approach to estimation of population mean in. A regression in ratio estimator proposed by samiuddin and hanif 6 is. In this study we modified regression estimator by muhammad hanif.
Her debut film plates was screened at the busan international film festival and became a great success followed by another. Samiuddin and hanif 6 have also proposed several estimators in single and two. Estimation of population mean in single and two phase sampling. This test is parallel to levenes and bartletts tests. In this paper, we have proposed three classes of mixture ratio estimators for estimating population mean by using information on auxiliary variables and attributes simultaneously in twophase sampling under full, partial and no information cases and analyzed the properties of the estimators. The motivation is to look up some generalized exponentialtype estimators for estimating the population variance. Generalized exponentialtype estimators for population mean. Watson 1937 used regression method of estimation to estimate the average area of the leaves on a plant. Citeseerx a modified regression type estimator in survey. An empirical study using natural data is given to compare the performance of the proposed estimators with the existing estimators. Samiuddin and hanif 6 have also proposed several estimators in single and two phase sampling. A vital role of estimating variance in survey sampling is to dig up information on the accuracy of the estimator and set aside confidence intervals. Mohammed samiuddin is a geriatrician in plano, texas and is affiliated with multiple hospitals in the area. Request pdf mixture ratio and regression estimators using multiauxiliary variables and attributes in single phase sampling in this paper a class of mixture ratio and regression estimators for.
Cochran 2 used auxiliary information in singlephase sampling to develop the ratio estimator for estimation of population mean. Hanif, estimation in two phase sampling with complete and incomplete information, proc. Mixture ratio and regression estimators using multi. Dash and mishra 1 suggested an improved class of estimators without defining the optimum estimator.
Muhammad hanif director of operations astreya linkedin. Jan 01, 2014 read generalized exponential chain ratio estimators under stratified twophase random sampling, applied mathematics and computation on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. A class of estimators of a general parameter of a finite. Robson 1957 and murthy 1964 worked independently on usual product estimator of population mean. While obtaining the percent relative efficiencies of the proposed estimators in table 3, the mse values of the estimators in table 2 have been utilized. Use of auxiliary variables and asymptotically optimum estimator to increase efficiency of estimators in double sampling kanwai me1, 2asiribo oe and isah a3 1department of mathematics, ahmadu bello university, zaria. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Multivariate estimators for two phase sampling 1college of statistical and actuarial sciences, university of the punjab.
Suman hanif is an awardwinning filmmaker based in the north of england. Laplace 1820 was the first to use auxiliary information in ratio type estimator. Use of auxiliary variables and asymptotically optimum. Generalized exponential chain ratio estimators under. View mohammad samiuddins profile on linkedin, the worlds largest professional community. Seemingly unrelated multivariate regression estimators for. An alternative approach to estimation of population mean in twostage sampling ravendra singh 1, gajendra k. It was proved that optimum estimator in the proposed class of estimators was approximately equally efficient with the usual biased linear regression estimator. Selection procedures population 1 population 2 hansen. To compute the variance of the ree, we treat the ree as an estimator of the table 2 firstphase counts stratum n h n 1h n 2h 1 990 30 9 2 1155 33 5 3 442 17 8 twophase sampling 69 firstphase horvitzathompson total.
A simulated study was carried out to compare the performance of the proposed estimators with the. Facebook is showing information to help you better understand the purpose of a page. Article in pakistan journal of statistics 232 january 2007 with 214 reads. Samiuddin ahmed, al sharjah, ash shariqah, united arab emirates. Selection procedures population 1 population 2 hansen hurvitz estimator pps from statistics 205 at the education university of hong kong. Generalized exponential chain ratio and chain product estimators under stratified twophase random sampling for nonresponse generalized exponential chain ratio and chain product estimators under stratified twophase random sampling for nonresponse. Plus, free twoday shipping for six months when you sign up for amazon prime for students. A class of estimators of the general parameter is suggested and the lower bound of the variance of this estimator is obtained in sections 2 and 3. Mohammed samiuddin, geriatrician in plano, tx us news.
Hanif made 499 for karachi in a match against bahawalpur before being run out attempting his five hundredth run. An alternative approach to estimation of population by. Muhammad hanif menyenaraikan 6 pekerjaan pada profil mereka. Squ journal for science, 2014, 192, 97100 2014 sultan. Generalized exponential estimators for population variance. To avoid multicollinearity, it is assumed that both auxiliary variables have minimum correlation. Hanif09amodified, author muhammad hanif and naqvi hamad and muhammad qaiser shahbaz, title a modified regression type estimator in survey sampling, journal world. Sampling using multiauxiliary variables 9783838346786. Some improved estimators in double sampling using two auxiliary variables.
A special case is discussed and numerical study is presented in section 4. Wasim hanif barclays ai eagle barclays ventures linkedin. Generalized exponential estimators of finite population mean. Some special cases have been deduced from the suggested estimator in the form of remarks. See actions taken by the people who manage and post content. Lihat profil muhammad hanif amirudin di linkedin, komuniti profesional yang terbesar di dunia. Samiuddin and hanif 2007 have reported three different methods of estimation. Population variance, auxiliary variable,exponential estimator,twophase sampling,mean square error, bias. An empirical was carried out to compare the performance of the proposed estimator with the existing estimators of finite. In this paper, we have developed estimators of finite population mean using mixture regression estimators using multiauxiliary variables and attributes in twophase sampling and investigated its finite sample properties in full, partial and no information cases. It has been seen that the proposed estimator performs reasonably well as compared with the existing estimators of population mean. Mixture regressioncumratio estimator using multiauxiliary. Muhammad arif hanif services engineerii ericsson linkedin.
Samiuddin and hanif 11 developed twophase sampling version of sukhatme et al. A singersoldier whose contribution in kargil war is exemplary. Samiuddin and hanif sh07 has shown that the variance of 12. Mohammed samiuddin, md is a geriatric medicine specialist in mesquite, tx. Diana and tommassic 18 argued that the regression type of estimators as given by ahmed et al.
Cochran 1940 used auxiliary information in singlephase sampling to develop the ratio estimator for estimation of population mean. A ratiocumproduct type exponential estimator using. Zahoor ahmad1, rahma zubair2, ummara shahid3 abstract in this paper we have proposed a general class of estimators for twophase sampling to estimate the population mean in the case when nonresponses occur at the first phase. A modified regression type estimator in survey sampling. Both empirical and simulation studies have also been carried out to analyze the e ciency of the proposed estimators with some existing estimators. In section 4, the proposed estimator is compared with other existing estimators in two phase sampling and we obtain certain conditions that proposed estimator is found to be more e cient than other estimators. Generalized multivariate ratio and regression estimators. In this paper, we have considered stratified twophase sampling design with subsampling the nonrespondents in the presence of nonresponse for estimating population mean considering the information of two auxiliary variables. Efficiency comparison of the proposed estimator has been made with the estimator proposed by samiuddin and hanif 11. Generalized exponentialtype estimators for population. Lihat profil lengkap di linkedin dan terokai kenalan dan pekerjaan muhammad hanif di syarikat yang serupa. Similarly, the samiuddin and hanif 2006 estimator presented in 1. The estimator had a smaller mse compared to that of jhajj, sharma and grover 11.
In the ratio estimator, the study variable and the auxiliary variable have high positive correlation and the regression line passes through the origin. View muhammad hanifs profile on linkedin, the worlds largest professional community. Pdf generalized exponential chain ratio and chain product. Pdf a modified regression type estimator in survey sampling. The aim of this paper is to develop a regression type estimator with two auxiliary variables for twophase sampling when we dont have any type of information about auxiliary variables at population level. A regression type estimator with two auxiliary variables. A regressioninratio estimator proposed by samiuddin and hanif 6 is.
Muhammad hanif, department of mathematics, lums, lahore, pakistan 799 some new regression types estimators in two phase sampling 1muhammad hanif, 2naqvi hammd and 3muhammad qaiser shahbaz 1department of mathematics, lums, lahore, pakistan 2national college of business administration and economics, lahore, pakistan. A general family of estimators of finite population ratio, product and mean using two phase sampling scheme in the presence of nonresponse. This paper is an extension of hanif, hamad and shahbaz estimator 1 for twophase sampling. Pdf a regression type estimator with two auxiliary. An empirical study is carried out to judge the merits of the suggested estimators over usual unbiased estimator, ratio estimator and regression estimators. Mohammad samiuddin manager data centre governance hsbc. In this paper, we have extended the ratiocumproduct estimator suggested by singh 9 to two phase samplingby considering the three strategies proposed by samiuddin and hanif 14 i. Her unique films are dedicated to exploring social, cultural and environmental concerns with the intention to empower people and contribute to society. The firstphase total estimator for x is 366, 519, 1282, 420 segments. Hanif, haq and shahbaz 14 proposed a general family of estimators using multiple auxiliary attribute in single and doublephase sampling. We propose a class of exponential regression cum ratio estimator in section 3. A modified regression type estimator in survey sampling 2009 cached. Generalized exponential estimators for population variance under.
Their specialties include family medicine, general practice, gynecology. They further suggested that no new estimators be proposed, since no estimator can be more efficient than the best estimators proposed by ahmed et al. Two classes of combined regression and ratio estimators are defined in two different situations along with their properties. The 1215152442 npi number is assigned to the healthcare provider mohammed samiuddin m. See the complete profile on linkedin and discover muhammad arifs connections and jobs at similar companies. A general family of estimators of finite population ratio. Mixture regression estimators using multiauxiliary. In the ratio estimator, the study variable and the auxiliary variable had a high positive correlation and the regression line was passing through the origin. View muhammad arif hanifs profile on linkedin, the worlds largest professional community. It is shown that the proposed estimator is more efficient than the usual unbiased estimator and the c.
In this paper, we have proposed estimators of finite population mean using generalized ratio cumproduct estimator for twophase sampling using multiauxiliary variables under full, partial and no information cases and investigated their finite sample properties. See the complete profile on linkedin and discover muhammad. Sampling algorithm of order statistics for conditional lifetime. See the complete profile on linkedin and discover mohammads connections and jobs at similar companies. View muhammad samiuddins profile on linkedin, the worlds largest professional community. Samiuddin and hanif 10 introduced ratio and regression estimation procedures for estimating population mean in twophase sampling for different three situa. In all he made 55 firstclass centuries and finished with a. It has been seen that the proposed estimator performs. In this paper we propose generalized multiphase multivariate ratio estimators in the presence of multiauxiliary variables for estimating population mean vector of variables of interest. The classical regression estimator of population mean is. Estimation in two phase sampling with complete and incomplete information. Easily share your publications and get them in front of issuus. The aim of this paper is to develop a regression type estimator with two auxiliary variables for twophase sampling when we dont have any type of information about auxiliary variables at.
And in hanif, hamad, and shahbaz, 2009 with k 0 1 and when the ratioproduct estimator singh and espejo, 2003 is considered for the function modeling x 2. See the complete profile on linkedin and discover wasims connections and jobs at similar companies. Samiuddin and hanif 14 proposed ratio and regression estimation procedures to. Both theoretical and empirical results are encouraging. View the profiles of professionals named samiuddin shaikh on linkedin.
Muhammad samiuddin pakistan professional profile linkedin. Generalized multiphase multivariate ratio estimators for. In this paper, we have proposed a class of mixture regressioncumratio estimator for estimating population mean by using information on multiple auxiliary variables and attributes simultaneously in singlephase sampling and analyzed the properties of the estimator. Altaf h shaik, md is a doctor primarily located in brooklyn, ny. Some improved estimators in double sampling using two. A class of improved estimators for estimating population mean. Hello select your address best sellers todays deals new releases books electronics gift ideas customer service home computers sell. Entering the dimensions of tiled surfaces other than floors defining steel requirements using thumb rule choosing the works in the project. Some new regression types estimators in two phase sampling. A ommo ddiiffiieed srreeggrressssiioonn eesttiimmaattoorr ffoorr ddoouubbllee ssaammpplliinngg 1 olayiwola o. Ahmad 1 has proposed various estimators for two phase and multiphase sampling using.
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