# Analysis Tools

## Analysis Tools

Bootstrap Estimates
Performs a low sample size bootstrap analysis (1000s). It provides means, medians, and standard deviations resulting from bootstrapping of a test data sample.Analysis Parametric Reliability Models
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. The application also accommodates users who merely want to plot graphs based on existing parameter estimates from previously fitted reliability models.Analysis
Distribution Visualization
Plots probability density functions of distributions with user-adjustable parameters to aid comparison and understanding of "shape".Analysis Two Sample Kolmogorov-Smirnov Test
This application computes the Kolmogorov-Smirnov test statistic for comparing two distributions, provides report-ready visualizations of the probability density and empirical cumulative density functions, and generates a paragraph explaining the meaning of the test statistic and its associated p-value.Analysis Bayesian Binomial Credible Intervals
This app computes the Bayesian posterior central interval for binomially distributed data (e.g., hit/miss, success/fail outcomes). We offer three approaches for computing the posterior central interval. Two approaches are based on the use of objective, or noninformative priors. A third approach allows the user to enter a subjective prior based on historical data.Analysis
• Confidence Intervals Availability Exponential Confidence Intervals
Calculator (.XLSX)
This tool calculates an 80% confidence interval for operational availability assuming both uptimes and downtimes are exponentially distributed.Analysis
• Confidence Intervals Binomial Confidence Intervals
Calculates multiple confidence intervals for binomial (pass/fail) data.Analysis
• Confidence Intervals Lognormal Confidence Intervals
Calculates Wald Confidence Intervals about the mean, median, and percentiles for a single sample where the data best follow a lognormal distribution. Analysis
• Confidence Intervals
Lognormal Confidence Intervals
Calculates Wald Confidence Intervals about the mean and percentiles for a single sample analysis where the data best follow a lognormal distribution.Analysis
• Confidence Intervals
Reliability Confidence Intervals
Calculates exact confidence intervals for the mean time between failures when failures follow an exponential distribution.Analysis
• Reliability
• Confidence Intervals Top N Pareto Front Search
JMP Add-In, video demonstration of installation and use, and introduction document and video lecture on Top N Pareto Front Search.Analysis
• Solution Reduction Survey Exploratory Data Analysis
This web application analyzes Likert-scale survey data. Users upload .csv-formatted data tables, and the application produces customizable tables of statistics and plots of survey responses. Tables and plots can be downloaded for reporting or further analysis.Analysis
• Survey Results

NASA-TLX Scoring Sheet
Calculates raw and weighted individual and sample-level workload scores given raw responses to the NASA-TLX questionnaire.Analysis
• Survey Results
• Published Surveys
System Usability Scale (SUS) Scoring Sheet
Coming Soon: Calculator (.XLSX)
Calculates overall usability scores given raw responses to the SUS questionnaire.Analysis
• Survey Results
• Published Surveys Comparing Reliability Tests
This tool generates plots comparing the likelihood of different outcomes for reliability tests. It is applicable for any continuous measure of reliability, including time (e.g., hours) and distance (e.g., miles). It can also be used with discrete measures of reliability (e.g., rounds fired between failure) provided the numbers are sufficiently large. (Hundreds or thousands between failure are probably sufficient.)Design
• Analysis