Organize R projects for volleyball analytics, manage file paths with the here package, and load DVW files efficiently. Covers project setup, folder structure, data validation, and working with DataVolley play-by-play data.

Does the "Modern Holiday Classic" actually exist, or are we living in an era of quantity over quality? This research project analyzes over 80 years of holiday cinema to identify the "Frequency of Greatness"—measuring how often a "must-own" classic is released compared to the total industry output. The central question: Even if quality films are still being made at the same rate, does the massive increase in production volume make them effectively invisible? Bonus questions: Which actors are in the most Christmas movies? Does box office success mean a great film? Why aren't there any good movies in the 1960s and '70s? What films have I missed?

Relatório simplificado de gastos com Cota Parlamentar, divididos por: * Parlamentar * Partido * UF * Tipo de gasto * Ano

• Analyzed CompleteJourney grocery transaction data in R (tidyverse) to clean the dataset, build key metrics (AOV, basket size, purchase frequency), and compare cohorts and seasonality patterns, then delivered an R Markdown report with actionable recommendations to improve revenue through pricing and promotions.

confusion matrix

This report presents an exploratory analysis of the training text data used for building a word prediction application. The datasets were successfully downloaded and loaded into R. Basic summaries such as line counts, word counts, and frequency tables were created. Simple plots were used to visualize key features of the data. The findings will guide the development of the prediction algorithm and Shiny app.

Homework for Chapter 1 – R programming R homework – mean & RMSE exercises