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Analysis
This tool calculates an 80% confidence interval for operational availability assuming both uptimes and downtimes are exponentially distributed.Availability Exponential Confidence Intervals
Spreadsheet-XLSX
Contributed by: IDA Staff
Dec-03-2020Confidence Intervals Contributed by: IDA Staff
Dec-03-2020Confidence Intervals Contributed by: IDA Staff
Aug-01-2022Confidence Intervals, Binomial, Sample Size Contributed by: IDA Staff
Dec-03-2020Confidence Intervals Contributed by: IDA Staff
Dec-03-2020Reliability Analysis
This spreadsheet allows you to perform bootstrap analysis. Output: Mean, Median, Standard deviation, HistogramsBootstrap Estimates
Spreadsheet-XLSX
Contributed by: IDA Staff
Dec-03-2020Bootstrap Design|code|
Estimates power and plots power by sample size for a multi-factor categorical test.Categorical Analysis Power
Interactive Shiny App
Contributed by: IDA Staff
Dec-03-2020Power Contributed by: IDA Staff
Dec-03-2020Reliability Contributed by: IDA Staff
Apr-12-2021Contributed by: IDA Staff
Dec-03-2020Visualization Contributed by: IDA Staff
Dec-03-2020Reliability Planning
Documents initial list and sorting of factors that could affect test outcomes.Fishbone Diagram
Document-PDF
Contributed by: IDA Staff
Dec-03-2020Factor Management Planning
Provides generic wording for common questions in test and evaluation that can be tailored to specific systems.General Survey Questions
Calculator-XLS
Contributed by: IDA Staff
Dec-03-2020Survey, Custom Surveys Contributed by: IDA Staff
Dec-03-2020Power Planning
Groups factors according to management strategy to assist in down-selection and design.Input-Process-Output Diagram
Document-PDF
Contributed by: IDA Staff
Dec-03-2020Factor Management Contributed by: IDA Staff
Jan-12-2022Power Contributed by: IDA Staff
Dec-03-2020Binary Data, Logistic Regression Contributed by: IDA Staff
Dec-03-2020Confidence Intervals Planning
This booklet contains the materials necessary to collect subjective workload assessments with the NASA Task Load Index (TLX).NASA-TLX Administration and Scoring Manual
Document-PDF
This booklet contains the materials necessary to collect subjective workload assessments with the NASA Task Load Index (TLX).
Contributed by: IDA Staff
Dec-03-2020Survey, Published Surveys Analysis
Calculates raw and weighted individual and sample-level workload scores given raw responses to the NASA-TLX questionnaire.NASA-TLX Scoring Sheet
Calculator-XLS
Calculates raw and weighted individual and sample-level workload scores given raw responses to the NASA-TLX questionnaire.
Contributed by: IDA Staff
Sep-05-2023Survey Results, Published Surveys Planning
Includes original NASA-TLX question wording, rating scale, and word-pairs for optional choice task.NASA-TLX Survey Questions
Document-DOCX
Includes original NASA-TLX question wording, rating scale, and word-pairs for optional choice task.
Contributed by: IDA Staff
Dec-03-2020Survey, Published Surveys Contributed by: IDA Staff
Dec-03-2020Reliability Design, Analysis |code|
Estimates power and plots power by sample size for a one sample proportion test.One Sample Proportion Test and Power
Interactive Shiny App
Contributed by: IDA Staff
Dec-03-2020Power Design, Analysis
Estimates power and plots power by sample size for a one sample t-test.One Sample t-test and Power
Interactive Shiny App
Contributed by: IDA Staff
Dec-03-2020Power Analysis|code|
This application fits three statistical distributions to censored or un-censored univariate reliability data and plots the failure probability, reliability, hazard, and probability density functions for each model. It provides comparison criteria for model selection and allows the user to download high-resolution images of the model graphs.Parametric Reliability Models
Interactive Shiny App
Contributed by: IDA Staff
Apr-29-2021Reliability Contributed by: IDA Staff
Dec-03-2020Power Contributed by: IDA Staff
Jan-03-2023M&S validation Analysis
Calculates exact confidence intervals for the mean time between failures when failures follow an exponential distribution.Reliability Confidence Intervals
Calculator-XLS
Contributed by: IDA Staff
Dec-03-2020Reliability, Confidence Intervals Contributed by: IDA Staff
Aug-01-2022SPRT, Sequential Test, Binomial, Stopping Rule Contributed by: IDA Staff
Oct-28-2022SPRT, Sequential Test, Binomial, Sample Size Planning
Lists best practices for writing and formatting custom surveys.Survey Design Best Practices Checklist
Calculator-XLS
Contributed by: IDA Staff
Dec-03-2020Survey, Custom Surveys Contributed by: IDA Staff
Dec-03-2020Survey Results Contributed by: IDA Staff
Apr-09-2021System Usability Scale, Surveys Planning
Documents development of the SUS and provides questions, scoring and administration guidelines.System Usability Scale (SUS) Documentation
Document-PDF
Contributed by: IDA Staff
Dec-03-2020Survey, Published Surveys Analysis
Coming Soon! Calculates overall usability scores given raw responses to the SUS questionnaire.System Usability Scale (SUS) Scoring Sheet
Calculator-XLS
Coming Soon! Calculates overall usability scores given raw responses to the SUS questionnaire.
Contributed by: IDA Staff
Dec-03-2020Survey Results, Published Surveys Contributed by: IDA Staff
Dec-03-2020Solution Reduction Contributed by: IDA Staff
Dec-03-20202018-06-23