Variables & Data Types

Assignment Operator

In R, we typically use <- for assignment.

x <- 42
name <- "R Student"
is_valid <- TRUE

Operators & Expressions

Basic Math

5 + 10
10 / 2
2 ^ 3 # Power

Control Flow

If Statements

if (x > 10) {
    print("Large")
} else {
    print("Small")
}

Loops & Functions

For Loops

for (i in 1:5) {
    print(i)
}

Data Structures & Vectors

Creating Vectors

v <- c(1, 2, 3, 4, 5)
v * 2 # Vectorized operation

Data Frames & dplyr

The Pipe Operator

df %>%
    filter(age > 18) %>%
    select(name, salary)

Data Import & Cleaning

Learn how to read CSV and Excel files and clean messy data using tidyr.

Visualization with ggplot2

Grammar of Graphics

ggplot(data = df, aes(x = age, y = height)) +
    geom_point() +
    geom_smooth(method = "lm")

Statistical Analysis

Performing hypothesis testing and correlation analysis in R.

Advanced Data Manipulation

Using purrr for functional programming and stringr for text processing.

Capstone Project: Data Analysis

Perform an end-to-end data analysis on a real-world dataset, from cleaning and exploration to modeling and visualization.

# Project goals:
# 1. Load and clean a dataset
# 2. Perform exploratory data analysis (EDA)
# 3. Create publication-quality plots
# 4. Build a predictive model