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Questions tagged [reliability]

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A measure is said to have a high reliability if it produces similar results under consistent conditions. DO NOT confuse reliability with validity (see tag wiki). DO NOT use for inter-rater reliability which has its own tag inter-rater

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Let $X$ and $Y$ be two random variables one belongs to proportional hazard rate family and another is proportional reverse hazard rate family of distribution. Now my concern is whether there exists ...
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I am using a part of a questionnaire that could be scored in two ways: a Total Score (all items) and two Subscale Scores (each based on a subset of items). Internal consistency (McDonald’s ω) and the ...
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I encountered issues with reverse-coded items in two different Likert-type questionnaires. In the first questionnaire, a theoretically reverse-scored item initially showed positive correlations with ...
אוהד לוי's user avatar
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For a larger problem I am trying to solve, I have been reading about communality/item-level reliability for a single-factor model. From what I have read, I see that the formula for communality ($c$) ...
ambiguditi's user avatar
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I’d like to ask a general question about metrics. Recently, while working as an intern, I was asked to evaluate the success of different marketing journeys (in a CRM/Marketing Cloud context). The data ...
magicdatabase's user avatar
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For a project, we developed a two-item scale that we averaged after calculating the Spearman-Brown coefficient to assess its reliability. I am wondering what would be an appropriate cutoff for ...
hans_peter's user avatar
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I'm trying to compute composite reliability using the equation below (based on Wang & Stanley, 1970, and described here). $$ r_c = \frac{\sum_{i=1}^{k} r_i + \sum_{i=1}^{k} \sum_{j (\ne i)=1}^{k} ...
Alison Campbell's user avatar
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I conducted a pre-test consisting of an experiment in which a sample of 50 participants was exposed to 16 images. While viewing each image, participants responded to a Likert-type fear scale composed ...
Ric87's user avatar
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Edited for clarity. I am trying to set up a DGP for two vectors of normally distributed random variables $\mathbf{X}=(X_1, ..., X_{50})$ and $\mathbf{Y}=(Y_1, ..., Y_{50})$, with the following two ...
Arjun Shanmugam's user avatar
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It is a situation when we browse something sorted by rating. The sorting shows list of items according to their rating start from highest rating to lowest. We, the searcher, suppose to pick the ...
Kanokpon Arm's user avatar
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A few hundred people took a test made up of 20 questions. The questions were randomly chosen for each participant from a pool of around 1,000. Each question was scored as either 1 for a correct answer ...
AvadaMouse's user avatar
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I want to calculate the item-fit values (infit and outfit) and the person separation reliability (PSR) for a Rasch and 2PL model using R. My goal is developing a reliable and good fitting scale that ...
mirei's user avatar
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I have been reading about the renewal equation for a research project. I was amazed that despite plenty of research, the renewal equation does not seem to be implemented in any Python library (or is ...
rvdinter's user avatar
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I have measured RT in two conditions: condition A and condition B and I am interested in how RT in these conditions interacts with anxiety score. As is common, the split-half reliability is excellent ...
Pop's user avatar
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I have two different components in service, an old one and a new one. I want to know if the new component is more reliable than the old one (ie: higher MTBF) Group1 Old component: contains 80% of the ...
Yoan B. M.Sc's user avatar
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