ToolPebStatistics, Education & Research tools
Choose the task you need. Each tool explains its inputs, supported options and result.
Standard score (z score)z = (x − mean) / SDStandard error of a meanSE = sample SD / √nCohen d from a supplied pooled SDd = (mean₁ − mean₂) / pooled SDUnadjusted odds ratio from 2×2 countsOR = ad / bcCrude risk ratio from two cohortsRR = (events₁/total₁) / (events₂/total₂)Percentage point changeChange = new percent − old percentRelative percentage changeChange = (new − baseline) / baseline × 100Two-component weighted scoreScore = (score₁×weight₁ + score₂×weight₂)/(weight₁+weight₂)Study session duration from a time budgetMinutes per session = total hours × 60 / sessionsAssessment marks percentageScore = marks earned / maximum marks × 100CSV Cleaner, Statistics & ParetoClean duplicate rows, summarise numeric data, chart a sequence and count categories.