R Programming A-Z™: R For Data Science With Real Exercises!

Learn the core programming principles universal across languages to build a strong foundation before diving into R for data science. Follow the code or skip if you're already comfortable.

Learn to create and manipulate variables in R, perform arithmetic and function calls, print results, and handle character strings with paste.

Learn how to use logical variables and operators in R, including true/false values, comparisons, not, or, and, and storing results in a variable.

Learn how the while loop works in R, including its syntax, a logical expression, and the loop body. See how to avoid infinite loops and build a counter example.

Use the console in R Studio to run code, print variables, and see how script lines copy to the console for execution, with saving files for reproducibility.

Master the for loop in R and compare it with the while loop, using vectors like 1:5 to drive iteration and print phrases such as Hello R.

Explore core R data types: integer, double, boolean, and character; learn loops, if statements, and random normal variables for hands-on practice.

Apply the law of large numbers in an R homework by generating standard normal data and counting values between -1 and 1 to compare the sample mean with 68.2 percent.

Explore how a vector is a sequence of data elements of the same type, a numeric vector. In R, indexing starts at 1; single number is stored as a vector.

Master vector indexing in R by using square brackets to access single or multiple elements, exclude items with negative indices, and combine indices with the c() function for flexible selection.

Explore vectorized operations in R: perform element-wise math and boolean comparisons, understand vector recycling and function arguments, and see why vectors are the language's building blocks.

Review the fundamentals of R: vectors, their single-type constraint, and creation tools c, seq, and rep, plus type checks like is.numeric and is.character, and indexing with brackets.

Use R to compute monthly profit, after-tax profit (30% tax), and profit margin; identify good and bad months by yearly mean, and the best and the worst months.

Explore how matrices store two-dimensional data in R, learn row and column indexing like A[3,4], and see why uniform data types prepare you for data frames.

Explore naming dimensions in R by naming matrix rows and columns and accessing elements by their names. Learn to create named vectors and use quotation marks to retrieve elements.

Explore how to create and manipulate named vectors and matrices in R using names, row names, and column names, and learn to assign, query, and clear names with practical examples.

Learn to visualize data in R with matplot, transpose matrices, and apply color legends to compare players. Explore plotting options and compute field goal accuracy by dividing goals by attempts.

Master R subsetting with square brackets for vectors and matrices, including selecting rows and columns. Learn to use drop = false to preserve matrix dimensions and avoid unintended vectors.

Turn vectors into matrices in R to analyze basketball free throws and free throw attempts. Visualize accuracy and playing style with plots that exclude free throws.

Master data frames in R as a flexible alternative to matrices, accommodating mixed types like numeric, character, and logical data. Learn to import data into tables for big analytics.

Visualize birth rate and internet usage across countries with a scatter plot, categorized by income group, using the demographic data set.

Explore your dataset in R with nrow, head, tail, str, and summary to inspect a 195-row by 5-column data frame, including country name, country code, birth rate, and internet users.

Explore visualizing data in R with qplot from ggplot2, map data frames with data=, and control aesthetics using I() to create plots and box plots.

Create data frames from vectors in R using the data frame function and directly name columns; learn to inspect with head, tail, and summary, and employ cbind and rbind techniques.

Recap the essentials of data frames in R: importing with read_csv, exploring with head and summary, and basic operations like filtering, merging, and using the dollar sign.

Explore advanced visualization in R using ggplot2, the main function for flexible, powerful charts, as we move from base graphics to ggplot2 in this course.

Visualize the movie ratings dataset from 2007–2011, comparing critics and audience ratings, budgets, and genres, while building five graphs and a genre-level correlation over time in R.

Discover the grammar of graphics with ggplot2, mastering the seven layers—data, aesthetics, geometries, statistics, facets, coordinates, and theme—to build insightful charts.

Learn how to work with factors in R by converting columns to factors, understanding levels, and turning year into a factor for grouping and analysis.

Explore histograms and density charts in R using ggplot, learn binwidth control, aesthetic mapping of fill to genre, add borders, and compare histogram statistics with density plots.

Explore statistical transformations in R with geom_smooth to reveal trends under overplotting, and learn to combine box plots with jitter for clearer, layered visualizations.

Explore how to create and facet ggplot visualizations in r using facets, facet_grid, and scales=free, building from histograms to scatter plots with budget, genre, year, and smooth trends.

Explore ggplot coordinates, apply limits and zoom with xlim, ylim, and cartesian layers, and learn how these controls affect the plotted data.

Master ggplot theming to enhance non-data ink, axis labels, legend placement, and plot titles, transforming a histogram of movie budgets by genre into a polished, presentation-ready chart.

Calculate profit, tax, and profit after tax from revenue and expenses; use vectors to determine profit margin and good months based on mean; present results in thousands with rounding.

Learn r programming for data science by building matrices with rbind, computing free throw accuracy and attempts per game, and visualizing player style excluding free throws.

Load and prepare the data in R, split by year, and merge life expectancy with fertility rate to compare 1960 and 2013 world trends; visualize with qplot by region.

Recreate a genre-versus-gross visualization in R using ggplot2 by importing data, selecting genre, studio, budget, and the gross percentage us, and applying filters to the top genres and studios.

Celebrate completing the course with a thank you video set in Tasmania, featuring Cradle Mountain and Crater Lake, and invite others to rate and review to help learn data science.

Analyze how box plots are constructed, including min, max, quartiles, median, and outliers using the 1.5x iqr rule, and compare distributions to interpret variance and skewness in data.