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All (40) (0 to 10 of 40 results)
- Articles and reports: 12-001-X199200214480Description:
We consider the problem of estimating the “cost weights” and “relative importances” of different item strata for the local market basket areas. The estimation of these parameters is needed to construct the U.S. Consumer Price Index Numbers. We use multivariate models to construct composite estimators which combine information from relevant sources. The mean squared errors (MSE) of the proposed and the existing estimators are estimated using the repeated half samples available from the survey. Based on our numerical results, the proposed estimators seem to be superior to the existing estimators.
Release date: 1992-12-15 - Articles and reports: 12-001-X199200214481Description:
Using data from a survey of U.S. Census Bureau interviewers, this paper examines whether experienced interviewers achieve higher response rates than inexperienced interviewers, controlling for differences in survey design and attributes of the populations assigned to them. After demonstrating that the relationship is positive and curvilinear, it attempts to explain the mechanisms by which experienced interviewers achieve these rates and elaborate the nature of the relationship. It examines what behaviors and attitudes underlie the higher success, with the hope that they might be instilled in trainees.
Release date: 1992-12-15 - Articles and reports: 12-001-X199200214482Description:
Motivated by a business survey design at Statistics Canada, we formulate the problem of sample allocation for a general two-phase survey design as a constrained nonlinear programming problem. By exploiting its mathematical structure, we propose a solution method that consists of iterations between two subproblems that are computationally much simpler. Using an approximate solution as a starting value, the proposed method works very well in an empirical study.
Release date: 1992-12-15 - Articles and reports: 12-001-X199200214483Description:
In almost all large surveys, some form of imputation is used. This paper develops a method for variance estimation when single (as opposed to multiple) imputation is used to create a completed data set. Imputation will never reproduce the true values (except in truly exceptional cases). The total error of the survey estimate is viewed in this paper as the sum of sampling error and imputation error. Consequently, an overall variance is derived as the sum of a sampling variance and an imputation variance. The principal theme is the estimation of these two components, using the data after imputation, that is, the actually observed values and the imputed values. The approach is model assisted in the sense that the model implied by the imputation method and the randomization distribution used for sample selection will together determine the appearance of the variance estimators. The theoretical findings are confirmed by a Monte Carlo simulation.
Release date: 1992-12-15 - Articles and reports: 12-001-X199200214484Description:
Maximum likelihood estimation from complex sample data requires additional modeling due to the information in the sample selection. Alternatively, pseudo maximum likelihood methods that consist of maximizing estimates of the census score function can be applied. In this article we review some of the approaches considered in the literature and compare them with a new approach derived from the ideas of ‘weighted distributions’. The focus of the comparisons is on situations where some or all of the design variables are unknown or misspecified. The results obtained for the new method are encouraging, but the study is limited so far to simple situations.
Release date: 1992-12-15 - Articles and reports: 12-001-X199200214485Description:
Godambe and Thompson (1986) define and develop simultaneous optimal estimation of superpopulation and finite population parameters based on a superpopulation model and a survey sampling design. Their theory defines the finite population parameter, \theta_N, as the solution of the optimal estimating equation for the superpopulation parameter \theta; however, some other finite population parameter, \phi, may be of interest. We propose to extend the superpopulation model in such a way that the parameter of interest, \phi, is a known function of \theta_N, say \phi = f (\theta_N). Then \phi is optimally estimated by f (\theta_s), where \theta_s is the optimal estimator of \theta_N, as given by Godambe and Thompson (1986), based on the sample s and the sampling design.
Release date: 1992-12-15 - Articles and reports: 12-001-X199200214486Description:
Resampling methods for inference with complex survey data include the jackknife, balanced repeated replication (BRR) and the bootstrap. We review some recent work on these methods for standard error and confidence interval estimation. Some empirical results for non-smooth statistics are also given.
Release date: 1992-12-15 - 8. Robust model-based methods for analytic surveys ArchivedArticles and reports: 12-001-X199200214487Description:
This paper reviews the idea of robustness for randomisation and model-based inference for descriptive and analytic surveys. The lack of robustness for model-based procedures can be partially overcome by careful design. In this paper a robust model-based approach to analysis is proposed based on smoothing methods.
Release date: 1992-12-15 - Articles and reports: 12-001-X199200214488Description:
In many finite population sampling problems the design that is optimal in the sense of minimizing the variance of the best linear unbiased estimator under a particular working model is bad in the sense of robustness - it leaves the estimator extremely vulnerable to bias if the working model is incorrect. However there are some important models under which one design provides both efficiency and robustness. We present a theorem that identifies such models and their optimal designs.
Release date: 1992-12-15 - 10. Job-related moves ArchivedArticles and reports: 75-001-X1992004101Geography: CanadaDescription:
The characteristics of people who moved in 1987 to look for work, start a new job or take a transfer are profiled.
Release date: 1992-12-01
Data (3)
Data (3) ((3 results))
- Table: 95F0168XDescription:
The "Profiles" series provides a statistical overview of various census geographic areas. Part A provides basic demographic, mother tongue, dwelling, household and family data collected from all households, that is, on a 100% basis.
Release date: 1992-09-15 - 2. 1991 Census: Profile of Census Tracts - Part A ArchivedProfile of a community or region: 95F0171XDescription:
The "Profiles" series provides a statistical overview of various census geographic areas. Part A provides basic demographic, mother tongue, dwelling, household and family data collected from all households, that is, on a 100% basis.
Release date: 1992-09-15 - Profile of a community or region: 95F0173XDescription:
The "Profiles" series provides a statistical overview of various census geographic areas. Part A provides basic demographic, mother tongue, dwelling, household and family data collected from all households, that is, on a 100% basis.
Release date: 1992-09-15
Analysis (36)
Analysis (36) (10 to 20 of 36 results)
- 11. RRSPs - Not just for retirement ArchivedArticles and reports: 75-001-X1992004133Geography: CanadaDescription:
This study focuses on RRSP payments in the form of cash withdrawals as well as their conversion to annuities.
Release date: 1992-12-01 - 12. Staying put: Job tenure among paid workers ArchivedArticles and reports: 75-001-X199200436Geography: CanadaDescription:
The author analyzes changes in the average tenure of paid workers between 1977 and 1991, and examines overall trends in various job categories, by sex and industry.
Release date: 1992-12-01 - 13. A degree of change ArchivedArticles and reports: 75-001-X19920046Geography: CanadaDescription:
The increase in the number of women receiving bachelor's degrees in fields of study that have traditionally been pursued by men is examined.
Release date: 1992-12-01 - 14. Employer-sponsored pension plans - Who is covered? ArchivedArticles and reports: 75-001-X199200471Geography: CanadaDescription:
This article focuses on the pension coverage of paid workers according to selected demographic and job-related characteristics. For example, it shows that pension plans are much more prevalent in some industries than in others.
Release date: 1992-12-01 - 15. Workers on the move: Quits ArchivedArticles and reports: 75-001-X199200346Geography: CanadaDescription:
A study of some of the factors affecting quit rates. In this article, quits are divided into two categories: quits for economic reasons and those for non-economic reasons.
Release date: 1992-09-01 - 16. Workers on the move: Permanent layoffs ArchivedArticles and reports: 75-001-X199200347Geography: CanadaDescription:
This paper identifies the characteristics of workers affected by permanent layoffs and the types of industries and firms in which they work.
Release date: 1992-09-01 - 17. Back injuries at work, 1982-1990 ArchivedArticles and reports: 75-001-X199200353Geography: CanadaDescription:
More than one-quarter of all time-loss claims due to work accidents are for back injuries. This article traces the pattern of growth in back-injury claims accepted by Workers' Compensation Boards during the last decade.
Release date: 1992-09-01 - 18. A note on Canadian unemployment since 1921 ArchivedStats in brief: 75-001-X199200387Geography: CanadaDescription:
An examination of trends in unemployment rate data as far back as 1921.
Release date: 1992-09-01 - Articles and reports: 12-001-X199200114492Description:
The scenario considered here is that of a sample survey having the following two major objectives: (1) identification for future follow up studies of n^* subjects in each of H subdomains, and (2) estimation as of this time of conduct of the survey of the level of some characteristic in each of these subdomains. An additional constraint imposed here is that the sample design is restricted to single stage cluster sampling. A variation of single stage cluster sampling called telescopic single stage cluster sampling (TSSCS) had been proposed in an earlier paper (Levy et al. 1989) as a cost effective method of identifying n^* individuals in each sub domain and, in this article, we investigate the statistical properties of TSSCS in crossectional estimation of the level of a population characteristic. In particular, TSSCS is compared to ordinary single stage cluster sampling (OSSCS) with respect to the reliability of estimates at fixed cost. Motivation for this investigation comes from problems faced during the statistical design of the Shanghai Survey of Alzheimer’s Disease and Dementia (SSADD), an epidemiological study of the prevalence and incidence of Alzheimer’s disease and dementia.
Release date: 1992-06-15 - Articles and reports: 12-001-X199200114493Description:
This paper examines the suitability of a survey-based procedure for estimating populations in small, rural areas. The procedure is a variation of the Housing Unit Method. It employs the use of local experts enlisted to provide information about the demographic characteristics of households randomly selected from residential unit sample frames developed from utility records. The procedure is nonintrusive and less costly than traditional survey data collection efforts. Because the procedure is based on random sampling, confidence intervals can be constructed around the population estimated by the technique. The results of a case study are provided in which the total population is estimated for three unincorporated communities in rural, southern Nevada.
Release date: 1992-06-15
Reference (1)
Reference (1) ((1 result))
- 1. Alternative measures of unemployment ArchivedSurveys and statistical programs – Documentation: 75-001-X1992004140Geography: CanadaDescription:
This study illustrates quarterly trends in unemployment rates based on alternative measures. By all of the indicators studies there was an overall increase in unemployment during the early 1990s.
Release date: 1992-12-01
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