Results 61 to 70 of about 1,439,158 (354)
A robust Condence Interval Based on Modied Trimmed Standard Deviation for the Mean of Positively Skewed Populations [PDF]
, 2020 In this study, we propose a robust confidence interval for the mean of skewed populations. It is simple adjustment of the Student-t confidence interval based on the trimmed mean and the modified trimmed standard deviation.
Abu-Shawiesh, Moustafa Omar Ahmed +1 more
core +3 more sources
Mathematics, 2020 When the additional sample for the second stage may not be available, one-stage multiple comparisons for exponential median lifetimes with the control under heteroscedasticity including one-sided and two-sided confidence intervals are proposed in this ...
Shu-Fei Wu
doaj +1 more source
Can the buck always be passed to the highest level of clustering?
BMC Medical Research Methodology, 2016 Background Clustering commonly affects the uncertainty of parameter estimates in epidemiological studies. Cluster-robust variance estimates (CRVE) are used to construct confidence intervals that account for single-level clustering, and are easily ...
Christian Bottomley +3 more
doaj +1 more source
Confidence Intervals For An Effect Size When Variances Are Not Equal [PDF]
, 2006 Confidence intervals must be robust in having nominal and actual probability coverage in close agreement. This article examined two ways of computing an effect size in a two-group problem: (a) the classic approach which divides the mean difference by a ...
Algina, James +2 more
core +2 more sources
Stacked survival models for residual lifetime data
BMC Medical Research Methodology, 2022 When modelling the survival distribution of a disease for which the symptomatic progression of the associated condition is insidious, it is not always clear how to measure the failure/censoring times from some true date of disease onset.
James H. McVittie +3 more
doaj +1 more source
Singhing with Confidence: Visualising the Performance of Confidence Structures [PDF]
, 2021 Confidence intervals are an established means of portraying uncertainty about an inferred parameter and can be generated through the use of confidence distributions. For a confidence distribution to be ideal, it must maintain frequentist coverage of the true parameter. This can be represented for a precise distribution by adherence to a cumulative unit
arxiv +1 more source
Educational and Psychological Measurement, 2016 Cronbach’s coefficient alpha is a widely used reliability measure in social, behavioral, and education sciences. It is reported in nearly every study that involves measuring a construct through multiple items.
Z. Zhang, K. Yuan
semanticscholar +1 more source
BMC Medical Research Methodology, 2023 Background Cross-sectional studies are useful for the estimation of prevalence of a particular event with concerns in specific populations, as in the case of diseases or other public health interests.
Milcíades Ibáñez-Pinilla +2 more
doaj +1 more source
Same or Different? Comparing the Coverage Rate of Five Different Approaches for Testing the Difference of Two Groups Means [PDF]
Tutorials in Quantitative Methods for Psychologytesting for statistically significant differences between two group means is one of the most common requirements in psychological research, for example, after an experiment has been conducted.
Bittmann, Felix
doaj +1 more source
Educational and Psychological Measurement, 2017 The article provides perspectives on p values, null hypothesis testing, and alternative techniques in light of modern robust statistical methods. Null hypothesis testing and p values can provide useful information provided they are interpreted in a sound
R. Wilcox, Sarfaraz Serang
semanticscholar +1 more source