UVA STAT 2120: Introduction to Statistical Analysis
STAT 2120 is UVA's introductory statistics workhorse: probability foundations, sampling distributions, confidence intervals, hypothesis testing, and regression. It is required or recommended across economics, pre-comm, and quantitative social science tracks, typically with software-based work in discussion sections.
Fennie is independent and not affiliated with University of Virginia. This is an unofficial study guide.
What makes it hard
The course is cumulative with a predictable failure arc: descriptive statistics feels easy, probability gets skimmed, and then inference arrives assuming both fluently. Exams emphasize choosing the right procedure and interpreting results in context, the exact skills formula-memorizers don't build, and the regression material at the end assumes everything before it.
What you'll cover
- • Descriptive statistics
- • Probability and random variables
- • Sampling distributions
- • Confidence intervals
- • Hypothesis testing
- • Simple and multiple regression
The STAT 2120 study guide
How to study for UVA STAT 2120, step by step.
- 1
Take probability seriously while it's cheap to
The STAT 2120 failure arc runs through a skimmed probability unit. Inference assumes it fluently; give the probability weeks full effort while the material still feels manageable.
- 2
Practice scenario-to-procedure matching
Given a described study, decide which interval or test applies and why, before computing anything. Exams grade that selection step heavily, and it's exactly what formula-memorizers skip.
- 3
End every problem with a sentence
One plain-English interpretation in context, stating what the interval or p-value actually says. That's the format exam questions reward, and the habit cements the concepts.
- 4
Do the software work early in the week
Discussion-section assignments surface confusion while there's still time to fix it. Deadline-night software sessions convert fixable gaps into permanent ones.
- 5
Review cumulatively every week
Regression at the end assumes intervals, tests, and probability all at once. Folding earlier-unit questions into each week's study keeps nothing cold when the course needs everything simultaneously.
Today
Today's STAT 2120 plan
What a Fennie Daily Plan looks like for STAT 2120. Yours is built from your own syllabus and adapts every day to your deadlines and progress.
First plan free, no card required. Fennie is independent and unaffiliated with your school.
FAQ
Is STAT 2120 at UVA hard?
It's manageable but unforgiving of gaps: every unit builds on the last, and students who skim probability rarely recover when inference arrives. The exams reward procedure selection and interpretation over computation, which surprises formula-focused studiers.
Do I need calculus for STAT 2120?
No, algebra suffices. The difficulty is conceptual: understanding what sampling distributions, intervals, and tests mean, and matching procedures to scenarios. Students wanting a calculus-based treatment take the math-stat track instead.
How do I study for STAT 2120 exams?
Drill scenario-to-procedure matching (given a study description, name the right test or interval and why) and write a one-sentence plain-English interpretation for every practiced answer. Review cumulatively each week, since the regression finale assumes the entire course at once.
More UVA courses
CS 1110: Introduction to Programming
CS 1110 is UVA's Python-based introduction to programming, assuming no prior experience. It is the entry point for prospective CS majors, minors, and a wide range of other students, covering variables, control flow, functions, lists and dictionaries, file handling, and basic objects, with weekly labs and programming assignments.
CS 2100: Data Structures and Algorithms 1
CS 2100 is the first course of UVA's renumbered CS core: data structures and algorithms in Java, covering lists, stacks, queues, trees, hash tables, and runtime analysis, with required labs alongside lecture. It replaced the old CS 2110/2150 path and is the gateway the rest of the major builds on.
CS 2120: Discrete Mathematics and Theory 1
CS 2120 is the discrete math course of UVA's CS core: logic, proofs, sets, functions, induction, and basic graph and number theory. It is the mathematical foundation for algorithms and theory courses later in the major, and it's most students' first proof-based course.
CS 2130: Computer Systems and Organization 1
CS 2130 takes UVA CS students below the languages they know: binary representation, gates and circuits, assembly, and C programming with pointers and memory. The goal is a working model of how computers actually execute code. Labs run alongside lecture, and it leads into CSO2.