Showing papers by "Ralph B. D'Agostino published in 1975"
TL;DR: The problem of selecting the size of the tails from a sample drawn from a distribution of test scores for item analysis study is discussed in this paper, where the selected tails were viewed as independent independent problems.
Abstract: The problem of selecting the size of the tails from a sample drawn from a distribution of test scores for item analysis study is discussed. In the past the selected tails were viewed as independent...
26 citations
TL;DR: When cardiovascular deaths were redefined as myocardial infarcts and sudden deaths, in an attempt to test a proposed etiologic inotropic hypothesis, no significant increase in cardiovascular mortality was found.
Abstract: No increased mortality trend attributable to tolbutamide is shown by an analysis of variance on logit-transformed data from the University Group Diabetes Program (UGDP) study. The UGDP's controversial finding of an increased rate with mortality subgrouped by "cardiovascular" causes is confirmed by the Biometric Committee's report, with reservations that failed to include overriding decisive factors. The basic problem is that inspected data set up the hypothesis (the increased cardiovascular mortality), and that the same data were used to test the hypothesis, so that resulting probability values no longer have the usual meaning. The problem was compounded by multiple testing of the data without adjusting the probability levels. When cardiovascular deaths were redefined as myocardial infarcts and sudden deaths, in an attempt to test a proposed etiologic inotropic hypothesis, no significant increase in cardiovascular mortality was found. ( JAMA 232:825-829, 1975)
19 citations
TL;DR: The problem areas of social indicator research are considered, what social variables should be considered as conceivable variables related to quality of life, what data should be collected taking in account the difficulty of not being able to directly measure variables of interest, and how to collect data guarding against multicollinearity.
Abstract: In the following we consider the problem areas of social indicator research which are of concern to the statistician and in which he can prove helpful. Among these are the purposes of social indicators, what social variables should be considered as conceivable variables related to quality of life, what data should be collected taking in account the difficulty of not being able to directly measure variables of interest, how does one collect the data (which is usually in the form of a time series) guarding against multicollinearity, and how should the collected data be handled and analyzed. We discuss why in social indicator research the secular trends, cyclical movements, seasonal variations and irregular fluctuations must be taken into account. Techniques are discussed for relating lead indicators in one time period to coincident indicators in another period. Finally we present a select bibliography in canonical correlation, forecasting, indicators and index numbers, path analysis, regression analysis, simulation techniques, time series analysis and other areas useful in analyzing social indicator data.
3 citations
TL;DR: In this paper, the authors presented the asymptotically best linear unbiased estimator for the scale parameter of the Rayleigh distribution based on samples where there may be type 2 censoring in the tails.
Abstract: We present the asymptotically best linear unbiased estimator for the scale parameter of the Rayleigh distribution based on samples where there may be type 2 censoring in the tails. The coefficients of the estimator are expressible in simple closed forms. All that is needed is knowledge of the amount of censoring. The estimator has good efficiency even for samples as small as 5.
1 citations