Build with R · Week 04

R Fundamentals

Finish the R-fundamentals sequence with vectors, data frames, functions, and vectorized operations.

Sep 14–18Lecture 3, from slide 31Classwork 2

ImportantWeek 4 sequence

1. Resume Lecture 3 at slide 31: ➡️ A vector stores values of one type, and continue through slide 45.
2. Use Classwork 2 to practice the R fundamentals.
3. Begin Homework 1.

Focus

• Vectors, data frames, factors, and type conversion
• Functions, arithmetic, and vectorized operations
• Reading and writing clear R expressions

Prepare

• Open Lecture 3 at slide 31
• Bring Classwork 2 and your R script
• Open your section’s project in Posit Cloud

Practice

• Create and inspect vectors and data frames
• Use functions and vectorized operations

Learning targets

• Create vectors and explain why one vector stores values of a common type.
• Explain how vectors, factors, and data frames organize values in R.
• Read function calls and use vectorized arithmetic.

Lecture slides

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Lecture 3 · R Fundamentals · Slides 31–45View slides in new tab

This week’s materials

Lecture 3 · Continue at Slide 31: VectorsClasswork 2 · R FundamentalsHomework 1 · Data Analytics Thinking, R Fundamentals, and Descriptive Statistics