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Consider a linear regression model with regression parameter beta and normally distributed errors. Suppose that the parameter of interest is theta = a^T beta where a is a specified vector. Define the parameter tau = c^T beta - t where c and…

Statistics Theory · Mathematics 2017-10-18 Paul Kabaila , Gayan Dharmarathne

We consider the nonparametric multivariate isotonic regression problem, where the regression function is assumed to be nondecreasing with respect to each predictor. Our goal is to construct a Bayesian credible interval for the function…

Statistics Theory · Mathematics 2022-11-24 Kang Wang , Subhashis Ghosal

The 'standard' confidence interval for a Poisson parameter is only one of a number of estimation intervals based on the chi-square distribution that may be used in the estimation of the mean or mean rate for a Poisson model. Other…

Statistics Theory · Mathematics 2011-02-07 E. A. Maxwell

In an empirical Bayes analysis, we use data from repeated sampling to imitate inferences made by an oracle Bayesian with extensive knowledge of the data-generating distribution. Existing results provide a comprehensive characterization of…

Methodology · Statistics 2021-09-09 Nikolaos Ignatiadis , Stefan Wager

For estimating a lower bounded parametric function in the framework of Marchand and Strawderman (2006), we provide through a unified approach a class of Bayesian confidence intervals with credibility $1-\alpha$ and frequentist coverage…

Statistics Theory · Mathematics 2012-12-21 Eric Marchand , William E. Strawderman

We consider a general regression model, without a scale parameter. Our aim is to construct a confidence interval for a scalar parameter of interest $\theta$ that utilizes the uncertain prior information that a distinct scalar parameter…

Methodology · Statistics 2020-09-17 Paul Kabaila , Nishika Ranathunga

Expected coverage and expected length of 90% upper and lower limit and 68.27% central intervals are plotted as functions of the true signal for various values of expected background. Results for several objective priors are shown, and…

High Energy Physics - Experiment · Physics 2007-05-23 Ilya Narsky

In epidemiology, some have argued that multiple comparison corrections are not necessary as there is rarely interest in the universal null hypothesis. From a parameter estimation perspective, epidemiologists may still be interested in…

Confidence interval procedures used in low dimensional settings are often inappropriate for high dimensional applications. When a large number of parameters are estimated, marginal confidence intervals associated with the most significant…

Methodology · Statistics 2017-02-24 Jean Morrison , Noah Simon

Suppose that one can construct a valid $(1-\delta)$-confidence interval (CI) for each of $K$ parameters of potential interest. If a data analyst uses an arbitrary data-dependent criterion to select some subset $S$ of parameters, then the…

Statistics Theory · Mathematics 2024-07-02 Ziyu Xu , Ruodu Wang , Aaditya Ramdas

Recently, Kabaila and Wijethunga assessed the performance of a confidence interval centred on a bootstrap smoothed estimator, with width proportional to an estimator of Efron's delta method approximation to the standard deviation of this…

Statistics Theory · Mathematics 2023-06-29 Paul Kabaila , Christeen Wijethunga

Models of weak-scale supersymmetry offer viable dark matter (DM) candidates. Their parameter spaces are however rather large and complex, such that pinning down the actual parameter values from experimental data can depend strongly on the…

High Energy Physics - Phenomenology · Physics 2011-07-14 Yashar Akrami , Christopher Savage , Pat Scott , Jan Conrad , Joakim Edsjö

This note is an invited discussion of the article "Confidence Intervals for Nonparametric Empirical Bayes Analysis" by Ignatiadis and Wager. In this discussion, I review some goals of empirical Bayes data analysis and the contribution of…

Methodology · Statistics 2022-03-08 Peter Hoff

When computing a confidence interval for a binomial proportion p one must choose between using an exact interval, which has a coverage probability of at least 1-{\alpha} for all values of p, and a shorter approximate interval, which may…

Statistics Theory · Mathematics 2015-03-11 Måns Thulin

Classical confidence intervals after best subset selection are widely implemented in statistical software and are routinely used to guide practitioners in scientific fields to conclude significance. However, there are increasing concerns in…

Methodology · Statistics 2023-11-27 Huiming Lin , Meng Li

Confidence intervals for a binomial parameter or for the ratio of Poisson means are commonly desired in high energy physics (HEP) applications such as measuring a detection efficiency or branching ratio. Due to the discreteness of the data,…

Data Analysis, Statistics and Probability · Physics 2009-12-23 Robert D. Cousins , Kathryn E. Hymes , Jordan Tucker

Suppose the lifetime of a large sample of batteries in routine use is measured. A confidence interval is computed to 394 plus/minus 1.96 times 4.6 days. The standard interpretation is that if we repeatedly draw samples and compute…

Other Statistics · Statistics 2024-02-16 Dan Hedlin

Consider panel data modelled by a linear random intercept model that includes a time-varying covariate. Suppose that we have uncertain prior information that this covariate is exogenous. We present a new confidence interval for the slope…

Methodology · Statistics 2017-09-01 Paul Kabaila , Rheanna Mainzer

In this paper, we derive an explicit formula for constructing the confidence interval of binomial parameter with guaranteed coverage probability. The formula overcomes the limitation of normal approximation which is asymptotic in nature and…

Statistics Theory · Mathematics 2008-05-12 Xinjia Chen , Kemin Zhou , Jorge L. Aravena

Several scientific fields including psychology are undergoing a replication crisis. There are many reasons for this problem, one of which is a misuse of p-values. There are several alternatives to p-values, and in this paper we describe a…

Methodology · Statistics 2020-10-05 Brian D. Segal