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Module E: Importing and Exporting Data (CSV, Excel)
Covers how to import data from CSV and Excel files (read.csv, readr, readxl), export data back out (write.csv, writexl), inspect new datasets with str()/summary(), and fix common import problems. Includes a worked example, practice exercises, and a quiz.
Workshop 1 Solution - Algorithms and Data Analysis
Workshop 1 Solution - Algorithms and Data Analysis
Alberto Dorantes, Ph.D.
Tec de Monterrey
Ders Günlüğü 1
Hafta 1 — Kurulum ve Çalışma Düzeni
Math Problems 10/3/26
Math problems of the day for 10/3/26.
stratifyR 2.0: A Major Update for Optimal Survey Stratification
stratifyR 2.0 is a major CRAN update for optimal survey stratification on a single continuous variable. This post walks through what it does: finding the best stratum boundaries and sample sizes, three solvers to choose from, cost-aware allocation, design-efficiency comparisons, the plots, and a no-code Shiny app.