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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
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 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
Dec-03-2020Survey 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
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 Contributed by: IDA Staff
Apr-29-2021Reliability Contributed by: IDA Staff
Dec-03-2020Power 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 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