Math & Numbers
Run an independent two-sample t test with pooled variance from raw data or summary statistics
two-sample-t-test-calculatorMath & Numbers
Calculate PDF, CDF, survival probability, and interval probability for a continuous uniform distribution
uniform-distribution-calculatorMath & Numbers
Calculate a trimmed mean by removing the same percentage of low and high values before averaging
trimmed-mean-calculatorMath & Numbers
Calculate sample variance, population variance, and optional standard deviation for a numeric dataset
variance-calculatorData Processing
Remove duplicates from an array using lodash _.uniq
uniq-arrayData Processing
Remove duplicates from an array using lodash _.uniqBy with a property path
uniq-byData Processing
Remove duplicates using lodash _.uniqWith and deep equality
uniq-withData Processing
Split grouped arrays using lodash _.unzip
unzip-arraysDevelopment
Batch parse URL query parameters with output of key frequency, value samples, and encoding anomaly detection
url-query-analyzerText Processing
Add thousand separators to long numbers (supports comma, dot, space, and custom separators)
thousands-separatorUtilities
Calculate UTM zone from latitude and longitude coordinates
utm-zone-calculatorDevelopment
Validate variable names against multiple programming language naming conventions and standards
variable-name-validator