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STATS 100A · STAT 100AIntroduction to Probability

Statistics · 4 units · Undergraduate upper division (100-199)

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Not open to students with credit for Electrical Engineering 131A or Mathematics 170A; open to graduate students. Students may receive credit for only two of following: course 100A, former course 110A, Biostatistics 100A. Probability distributions, random variables, vectors, and expectation.

P/NP or letter grading.

When it runs

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Requisites

Official UCLA wording

Requisites: Mathematics 32B, 33A.

BruinTree reads · Prerequisite

confidence 1.00 · from text
all of
  • MATH 32B
  • MATH 33A

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Requires

Everything that has to come before this course, not just the courses named in the requisite above.

STATS 100A

  • MATH 32BCalculus of Several Variables
    • MATH 31BIntegration and Infinite Series
      • MATH 31ADifferential and Integral Calculus1 more beneath
    • MATH 32ACalculus of Several Variables
      • MATH 31ADifferential and Integral Calculusanother path to it
  • MATH 33ALinear Algebra and Applications
    • MATH 3BCalculus for Life Sciences Students
      • MATH 3ACalculus for Life Sciences Students1 more beneath
    • MATH 31BIntegration and Infinite Seriesanother path to it
    • MATH 32ACalculus of Several Variablesanother path to it

2 direct requisites. Showing 10 courses over 3 levels; the branches marked with a count carry on past it. Every course here opens its own tree.

Unlocks

What this course is a requisite for, and what those courses lead to in turn.

STATS 100A21 more beyond

  • STATS 100BIntroduction to Mathematical Statistics14 more beyond
    • STATS 100CLinear Models2 more beyond
      • STATS C151Experimental Design
      • STATS 170Introduction to Time-Series Analysis
      • BIOMATH M257Computational Methods for Biostatistical Research
      • STATS C173Applied Geostatistics
      • STATS M230Statistical Computing
      • BIOSTAT M215Survival Analysis1 more beyond
      • BIOMATH M280Statistical Computing
      • BIOSTAT M257Computational Methods for Biostatistical Research
    • STATS 102BIntroduction to Computation and Optimization for Statistics
    • ECON 103Introduction to Econometrics26 more beyond
      • ECON 103LEconometrics Laboratory3 more beyond
      • ECON 104Data Science for Economists1 more beyond
      • ECON 104LData Science for Economists Laboratory1 more beyond
      • ECON 109CAdvanced Sequence: Computational Economics
      • ECON 109DAdvanced Sequence: Econometric Theory
      • ECON 109DLAdvanced Sequence: Econometric Theory Laboratory
      • ECON 109EAdvanced Sequence: Applied Empirical Economics
      • ECON 111Theories of Development4 more beyond
    • STATS 102CIntroduction to Monte Carlo Methods
    • STATS C116Applied Bayesian Social Statisticsanother path to it
    • HUM GEN M207ATheoretical Genetic Modeling
    • STATS 140XPCollaboration in Data Science
      • STATS 141XPPractice of Data Science
    • STATS 143Introduction to Research in Statistics
  • STATS 105Statistics for Engineers
  • BIOINFO M223Statistical Methods in Computational Biology
  • STATS 115Probabilistic Decision Making
  • STATS C116Applied Bayesian Social Statistics
  • BIOMATH M271Statistical Methods in Computational Biology
  • STATS C160Causal Inference for Health Data
  • STATS 200AApplied Probability2 more beyond
    • STATS 201BStatistical Modeling and Learning
      • STATS 201CAdvanced Modeling and Inference
      • STATS 206Modern Survey Methods
      • STATS 211Topics in Economics and Machine Learning
      • STATS 213Synthetic Data Generation
      • STATS C263Generative Data Science
    • STATS 212Graphical Models
    • BIOINFO M223Statistical Methods in Computational Biologyanother path to it
    • STATS 219Topics in Reinforcement Learning
    • STATS 231CTheories of Machine Learning
    • BIOMATH M271Statistical Methods in Computational Biologyanother path to it
    • STATS C236Introduction to Bayesian Statistics
    • STATS 238Vision as Bayesian Inferenceanother path to it
  • BIOSTAT 125The Science of Why: Causal Inference for Public Health
  • STATS C216Applied Bayesian Social Statistics
  • STATS 238Vision as Bayesian Inference
  • C&S BIO M175Stochastic Processes in Biochemical Systems
  • STATS M254Statistical Methods in Computational Biology
  • CH ENGR M148Introduction to Data Science
  • CHEM M186Stochastic Processes in Biochemical Systems

38 courses list this as a requisite. Showing 53 courses over 3 levels; the branches marked with a count carry on past it. Every course here opens its own tree.

  • Fall 2025
  • Winter 2026
  • Spring 2026
  • Summer 2026
  • Fall 2026
  • Winter 2027
  • Spring 2027

Scheduled, not typical — from UCLA’s Schedule of Classes, which publishes Fall 2025 through Spring 2027 and nothing before it.