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All (18)

All (18) (0 to 10 of 18 results)

  • Articles and reports: 12-001-X198700214514
    Description:

    This paper deals with the nonresponse problem in the estimation of the mean of a finite population, following an approach closely related to that of Cassel, Särndal and Wretman (1983). Two very simple methods are proposed for estimating the individual response probabilities; these are then used, in connection with a superpopulation model, to construct estimators for the population mean. A first evaluation of the properties of the proposed methods is given by a Monte Carlo experiment. The results shed some light on their effectiveness.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214515
    Description:

    Methods are given to estimate functions of the cell probabilities associated with a table of multinomial data that has been randomly rounded to multiples of a given number, say l. We show that: (i) random rounding causes only second order effects on bias and variance; (ii) the loss of efficiency in using the natural estimates of cell probability is negligible provided that the cell entry is large compared with (l^2 - 1) / (6R) where R is the number of cells in the table; and (iii) estimates of apparently exponentially small bias are available for moments of these natural estimates and for polynomials in the cell probabilities.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214516
    Description:

    The biases and stabilities of alternative variance estimators for the two stage random group design (Rao et al. 1962) are evaluated in a Monte Carlo study in the context of Canadian Labour Force Survey. The variance formula for raking ratio estimation procedure is derived using Taylor linearization method. The properties of the variance formula are investigated by a Monte Carlo simulation.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214517
    Description:

    Because it is easy to use, the “AGEVEN” record makes it possible to date events more precisely and to classify retrospectively demographic events (births and deaths), changes in marital status and changes in place of residence. The data collected are used to accurately recreate the socio-economic conditions that were present when the demographic events being studied took place.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214605
    Description:

    The CPS uses raking ratio estimation in post-stratification estimation to adjust sample estimates of population to census-based estimates of the population. An alternative procedure, using generalized least squares, is compared to the current procedure.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214606
    Description:

    A class of “constrained minimum distance” methods is considered for constraining household weights to be consistent with auxiliary information on the number of persons in various age x race x sex cells. The constrained weights are as close as possible to the initial weights based on the inverse probability of selection. This class of methods includes raking and generalized least square methods, as well as multinomial maximum likelihood, (where the cells of the distribution are household types.) The properties of the methods in the presence of systematic undercoverage of the household types are studied through some simple models for coverage. Comparisons with the principal person method are made and the paper concludes with the observation that it is necessary to know more about the nature of survey undercoverage before deciding on which of the constrained minimum distance or principal person methods is to be preferred in applications.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214607
    Description:

    Household surveys generally use separate procedures for estimating characteristics of persons and those of families. An integrated procedure is proposed and a least-squares estimator introduced to achieve this end. The estimator is shown to be unbiased under certain general conditions. Using data from the Canadian Labour Force Survey, variances for the estimator are calculated and shown to compare favourably to those from current procedures.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214608
    Description:

    A hybrid technique is described that employs both conventional and raking ratio estimation to handle the case when the population frequencies N_ij in a two-dimensional table are known, but some of the observed frequencies n_ij are small (or zero). Results are provided on the approach taken as it has evolved in the Corporate Statistics of Income Program over the last several years. Changes are still being considered and these will be discussed as well.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214609
    Description:

    The Hansen-Hurwitz (1943) strategy is known to be inferior to the Horvitz-Thompson (1952) strategy associated with a number of IPPS (inclusion probability proportional to size) sampling procedures. The present paper presents a simpler proof of these results and therefore has some pedagogic interest.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700114465
    Description:

    The two-stage rejection rule telephone sample design described by Waksberg (1978) is modified to improve the efficiency of telephone surveys of the U.S. Black population. Experimental tests of sample design alternatives demonstrate that: a) use of rough stratification based on telephone exchange names and states; b) use of large cluster definitions (200 and 400 consecutive numbers) at the first stage; and c) rejection rules based on racial status of the household combine to offer improvements in the relative precision of a sample, given fixed resources. Cost and error models are examined to simulate design alternatives.

    Release date: 1987-06-15
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Articles and reports (18)

Articles and reports (18) (0 to 10 of 18 results)

  • Articles and reports: 12-001-X198700214514
    Description:

    This paper deals with the nonresponse problem in the estimation of the mean of a finite population, following an approach closely related to that of Cassel, Särndal and Wretman (1983). Two very simple methods are proposed for estimating the individual response probabilities; these are then used, in connection with a superpopulation model, to construct estimators for the population mean. A first evaluation of the properties of the proposed methods is given by a Monte Carlo experiment. The results shed some light on their effectiveness.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214515
    Description:

    Methods are given to estimate functions of the cell probabilities associated with a table of multinomial data that has been randomly rounded to multiples of a given number, say l. We show that: (i) random rounding causes only second order effects on bias and variance; (ii) the loss of efficiency in using the natural estimates of cell probability is negligible provided that the cell entry is large compared with (l^2 - 1) / (6R) where R is the number of cells in the table; and (iii) estimates of apparently exponentially small bias are available for moments of these natural estimates and for polynomials in the cell probabilities.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214516
    Description:

    The biases and stabilities of alternative variance estimators for the two stage random group design (Rao et al. 1962) are evaluated in a Monte Carlo study in the context of Canadian Labour Force Survey. The variance formula for raking ratio estimation procedure is derived using Taylor linearization method. The properties of the variance formula are investigated by a Monte Carlo simulation.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214517
    Description:

    Because it is easy to use, the “AGEVEN” record makes it possible to date events more precisely and to classify retrospectively demographic events (births and deaths), changes in marital status and changes in place of residence. The data collected are used to accurately recreate the socio-economic conditions that were present when the demographic events being studied took place.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214605
    Description:

    The CPS uses raking ratio estimation in post-stratification estimation to adjust sample estimates of population to census-based estimates of the population. An alternative procedure, using generalized least squares, is compared to the current procedure.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214606
    Description:

    A class of “constrained minimum distance” methods is considered for constraining household weights to be consistent with auxiliary information on the number of persons in various age x race x sex cells. The constrained weights are as close as possible to the initial weights based on the inverse probability of selection. This class of methods includes raking and generalized least square methods, as well as multinomial maximum likelihood, (where the cells of the distribution are household types.) The properties of the methods in the presence of systematic undercoverage of the household types are studied through some simple models for coverage. Comparisons with the principal person method are made and the paper concludes with the observation that it is necessary to know more about the nature of survey undercoverage before deciding on which of the constrained minimum distance or principal person methods is to be preferred in applications.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214607
    Description:

    Household surveys generally use separate procedures for estimating characteristics of persons and those of families. An integrated procedure is proposed and a least-squares estimator introduced to achieve this end. The estimator is shown to be unbiased under certain general conditions. Using data from the Canadian Labour Force Survey, variances for the estimator are calculated and shown to compare favourably to those from current procedures.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214608
    Description:

    A hybrid technique is described that employs both conventional and raking ratio estimation to handle the case when the population frequencies N_ij in a two-dimensional table are known, but some of the observed frequencies n_ij are small (or zero). Results are provided on the approach taken as it has evolved in the Corporate Statistics of Income Program over the last several years. Changes are still being considered and these will be discussed as well.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700214609
    Description:

    The Hansen-Hurwitz (1943) strategy is known to be inferior to the Horvitz-Thompson (1952) strategy associated with a number of IPPS (inclusion probability proportional to size) sampling procedures. The present paper presents a simpler proof of these results and therefore has some pedagogic interest.

    Release date: 1987-12-15

  • Articles and reports: 12-001-X198700114465
    Description:

    The two-stage rejection rule telephone sample design described by Waksberg (1978) is modified to improve the efficiency of telephone surveys of the U.S. Black population. Experimental tests of sample design alternatives demonstrate that: a) use of rough stratification based on telephone exchange names and states; b) use of large cluster definitions (200 and 400 consecutive numbers) at the first stage; and c) rejection rules based on racial status of the household combine to offer improvements in the relative precision of a sample, given fixed resources. Cost and error models are examined to simulate design alternatives.

    Release date: 1987-06-15
Journals and periodicals (0)

Journals and periodicals (0) (0 results)

No content available at this time.

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