摘要:

Statistics is viewed as an activity using a variety of formulations to give incomplete, but revealing, descriptions of phenomena too complex to be completely modeled. Examples are given to stress the depth and variety of such activities and the intellectual satisfactions to be derived from them.

ISSN:0162-1459    

DOI:10.1080/01621459.1975.10480253

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

People often form opinions or make decisions after exposure to information provided by advocates. A continuing problem is the identification of procedures which lead to better balance in such information. Scoring of advocates through competition in statistically identical tasks is one approach to control. Shannon's [7] concept of information in a Bayesian framework is used for illustrative estimation models, and an experiment involving public opinion in an expressway controversy provides an example.

ISSN:0162-1459    

DOI:10.1080/01621459.1975.10480254

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

Evidence is available from many different kinds of surveys that repeated interviewing of the same persons can frequently change response patterns. For many characteristics, estimates from different panels relating to the same time period do not have the same expected value. In panel surveys, estimation techniques frequently take advantage of the correlation between observations on identical persons over time. The existence of a bias, its effect on both ratio estimates and composite estimates, and a comparison of the estimated mean-square errors of ratio and composite estimates are illustrated with data from the Current Population Survey.

ISSN:0162-1459    

DOI:10.1080/01621459.1975.10480255

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

The concept of power for monotone invariant clustering procedures is developed via the possible partitions of objects at each iteration level in the obtained hierarchy. At a given level, the probability of rejecting the randomness hypothesis is obtained empirically for the possible types of partitions of thenobjects employed. The results indicate that the power of a particular hierarchical clustering procedure is a function of the type of partition. The additional problem of estimating a “true” partition at a certain level of a hierarchy is discussed briefly.

ISSN:0162-1459    

DOI:10.1080/01621459.1975.10480256

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

This article examines the imputation of data in a one percent sample of the nation's ever-married women aged 18–25 from the 1970 Public Use Samples of the Census of Population. Nonwhites are more likely to be imputed data than are whites. Rates of imputation of data are found to be extremely high for some categories of women, and white-nonwhite fertility differentials are affected by imputation. Consequences for study of fertility differentials are noted. It is recommended that researchers routinely use information on imputation of data in any analysis of 1970 Census data.

ISSN:0162-1459    

DOI:10.1080/01621459.1975.10480257

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A problem in which two instruments are used simultaneously to measure the same response is discussed from the Bayesian viewpoint. The theory is applied to an example involving the burning times of 30 similar fuses. The numerical results are compared to those previously found by another method.

ISSN:0162-1459    

DOI:10.1080/01621459.1975.10480258

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

An interactive method for decomposing mixtures consisting of an arbitrary number of bivariate Gaussian components is described, which can handle problems currently attacked by cluster analysis methods. In contradistinction to most clustering methods, this procedure does not require selection of a metric or distance function with sample element arguments. Instead, estimates of population bivariate contours are examined graphically to yield estimates of subpopulation parameters. This approach is based on properties of the underlying population rather than on heuristic measures of distance between elements of a sample. Besides discussing the theory underlying this new class of procedures, several examples involving real and simulated data are presented.

ISSN:0162-1459    

DOI:10.1080/01621459.1975.10480259

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

In case of contamination, skewness or unequal variances, a nonparametric alternative to least squares regression is considered. In addition, investigators are often more interested in estimates of percentile lines than in the mean regression line. Thus, a modification of Brown-Mood regression is proposed to estimate the (100p) th percentile line α + βxof a random variable. This technique is applied to some data (artificial, but similar to real) relating the salary (y) of a statistics professor and the number (x) of years in rank. The estimates of several of these percentile lines make very good descriptive statistics.

ISSN:0162-1459    

DOI:10.1080/01621459.1975.10480260

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

Durbin'shtest for autocorrelated error terms is examined with respect to its small-sample power in addition to Durbin's other asymptotic test, thettest, and the Durbin-Watsonboundstest. Using sampling experiments for regression with lagged values of the dependent variable with first-order autocorrelated disturbances, we find that both thehandttests significantly outperform the Durbin-Watson bounds test and are acceptably powerful in small samples.

ISSN:0162-1459    

DOI:10.1080/01621459.1975.10480261

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

Using a geometric approach, we derive sharp upper and lower bounds on the Gini index of income inequality based on data which are grouped into intervals and consist of percentages of recipients in each income interval together with the corresponding percentages of income these recipients receive. The proposed method requires neither any assumption regarding the functional form of the underlying distribution function nor the knowledge of the mean income or the limits of the income intervals.

ISSN:0162-1459    

DOI:10.1080/01621459.1975.10480262

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor