Past Exams

Use the Past Exams by Term section to see an archive of all Data 100 exams since its inception. Use the Past Exams by Topic section for focused practice on specific topics. Both tables list relevant links to the exam and solutions.

Our past exams have been annotated using our Data 100: Past Exam Common Questions document, which curates common exam-related questions we’ve seen on Ed over the past couple semesters and corresponding staff responses. This page also “webifies” our Practice Problems by Topic document, which is helpful for finding past exam questions pertaining to specific topics.

Jump to:

• Reference Sheet
• Past Exams By Term
• Past Exams By Topic
  • Pandas
  • EDA, Data Cleaning, and Visualization
  • Regular Expressions
  • Data Collection, Sampling and Probability
  • Modeling/Regression
  • Loss Functions & Gradient Descent
  • Feature Engineering and Dimensionality
  • Regularization and Cross Validation
  • Bias and Variance
  • Inference
  • SQL
  • Logistic Regression & Classification
  • PCA
  • Clustering & Big Data
  • Decision Trees [no longer in scope]

Reference Sheet

Here were Fall 2025’s reference sheets for Midterm 1, Midterm 2, and Final.

Past Exams By Term

Semester	Midterm 1	Midterm 2	Midterm 3	Final	Reference Sheet
Spring 2026
Fall 2025	Exam PrairieLearn (Solutions)	Exam PrairieLearn (Solutions)		Exam (Solutions)	MT1 MT2 Final
Summer 2025	Exam PrairieLearn (Solutions)			Exam PrairieLearn (Solutions) [Walkthrough]	Midterm Final
Spring 2025	Exam PrairieLearn (Solutions)			Exam (Solutions) [Walkthrough]	Midterm Final
Fall 2024	Exam (Solutions)			Exam (Solutions) [Walkthrough]	Midterm Final
Summer 2024	Exam (Solutions) [Walkthrough]			Exam (Solutions) [Walkthrough]	Midterm Final
Spring 2024	Exam (Solutions)			Exam (Solutions) [Walkthrough]	Midterm Final
Fall 2023	Exam (Solutions) [Walkthrough]			Exam (Solutions) [Walkthrough]	Midterm Final
Summer 2023	Exam (Solutions) [Walkthrough]			Exam (Solutions) [Walkthrough]	Midterm Final
Spring 2023	Exam (Solutions) [Walkthrough]			Exam (Solutions) [Walkthrough]	Midterm Final
Fall 2022	Exam (Solutions) [Walkthrough]				Midterm
Summer 2022	Exam (Solutions) [Walkthrough]			Exam (Solutions) [Walkthrough]	Midterm Final
Spring 2022	Exam (Solutions) [Walkthrough]	Exam (Solutions)		Exam (Solutions) [Walkthrough]	MT1 MT2 Final
Fall 2021	Exam (Solutions)
Summer 2021	Exam (Solutions) [Walkthrough]			Exam (Solutions)
Spring 2021	Exam (Solutions)			Exam (Solutions) [Walkthrough]
Fall 2020	Exam (Solutions)			Exam (Solutions)
Summer 2020	Exam (Solutions)	Exam (Solutions)		Exam (Solutions)
Spring 2020	Checkpoint (Solutions)				Checkpoint
Fall 2019	Exam (Solutions)	Exam (Solutions)		Exam (Solutions)	Midterm 1
Summer 2019	Exam (Solutions) [Walkthrough]			Exam (Solutions)
Spring 2019	Exam (Solutions) [Walkthrough]	Exam (Solutions) [Walkthrough]		Exam (Solutions)	Midterm 1
Fall 2018	Exam (Solutions)			Exam (Solutions)
Spring 2018	Exam (Solutions)			Exam (Solutions) [Walkthrough]
Fall 2017	Exam (Solutions) [Walkthrough]			Exam (Solutions)
Spring 2017	Exam (Solutions)			Exam (Solutions)

Past Exams By Topic

Pandas

Exam	Questions	Solutions
Fall 2025 Midterm 1	Q1-2, PrairieLearn	Solutions
Summer 2025 Final	Q1a-b, PrairieLearn	Solutions
Summer 2025 Midterm	Q1c-g, Q2b, PrairieLearn	Solutions
Spring 2025 Final	Q1b-c, Q1e	Solutions
Spring 2025 Midterm	Q1g-i, PrairieLearn	Solutions
Fall 2024 Final	Q1d, Q1e i, Q6d	Solutions
Fall 2024 Midterm	Q2a-b, Q3a-c	Solutions
Summer 2024 Final	Q5a-b, Q5d	Solutions
Summer 2024 Midterm	Q2a-e	Solutions
Spring 2024 Final	Q1e-g	Solutions
Spring 2024 Midterm	Q1, Q2d	Solutions
Fall 2023 Final	Q1g	Solutions
Fall 2023 Midterm	Q1c-g, Q2b-c	Solutions
Summer 2023 Midterm	Q1, Q2	Solutions
Spring 2023 Midterm	Q1	Solutions
Fall 2022 Midterm	Q1, Q4	Solutions
Spring 2022 Midterm 1	Q2, Q3	Solutions
Summer 2022 Midterm	Q5	Solutions
Fall 2021 Midterm	Q7	Solutions
Summer 2021 Midterm	Q4-7	Solutions
Spring 2021 Final	Q6, Q7	Solutions
Spring 2021 Midterm	Q2	Solutions
Fall 2020 Final	Q2, Q3	Solutions
Fall 2020 Midterm	Q4	Solutions
Summer 2020 Final	Q6, Q9	Solutions
Summer 2020 Midterm 1	Q7 (Pandas)	Solutions
Spring 2020 Checkpoint	Q3 (Pandas)	Solutions
Fall 2019 Midterm 1	Q1	Solutions
Summer 2019 Final	Q1	Solutions
Summer 2019 Midterm	Q1	Solutions
Spring 2019 Final	Q7	Solutions
Spring 2019 Midterm 1	Q1	Solutions
Fall 2018 Final	Q1	Solutions
Fall 2018 Midterm	Q2 (Pandas)	Solutions
Spring 2018 Final	Q4 (Pandas)	Solutions
Spring 2018 Midterm	Q2 (Pandas)	Solutions

EDA, Data Cleaning, and Visualization

Exam	Questions	Solutions
Fall 2025 Midterm 1	Q4, PrairieLearn	Solutions
Summer 2025 Final	Q1f, PrairieLearn	Solutions
Summer 2025 Midterm	Q1a-b, Q3a-b, PrairieLearn	Solutions
Spring 2025 Final	Q1b-d	Solutions
Spring 2025 Midterm	Q1a-g, Q3a-f, PrairieLearn	Solutions
Fall 2024 Final	Q1c, Q1e ii, Q1e iii	Solutions
Fall 2024 Midterm	Q2f, Q3d-g	Solutions
Summer 2024 Final	Q4a, Q5c	Solutions
Summer 2024 Midterm	Q3b-c	Solutions
Spring 2024 Final	Q1a-c	Solutions
Spring 2024 Midterm	Q2, Q4	Solutions
Fall 2023 Final	Q1b, Q1c, Q1f	Solutions
Fall 2023 Midterm	Q1a-b, Q1d-h	Solutions
Summer 2023 Midterm	Q2	Solutions
Spring 2023 Midterm	Q4, Q5	Solutions
Fall 2022 Midterm	Q2, Q4	Solutions
Spring 2022 Midterm 1	Q5, Q6	Solutions
Summer 2022 Midterm	Q1d, Q1e, Q4	Solutions
Summer 2021 Final	Q5	Solutions
Summer 2021 Midterm	Q11, Q13	Solutions
Spring 2021 Final	Q1	Solutions
Spring 2021 Midterm	Q5, Q7	Solutions
Fall 2020 Final	Q4	Solutions
Fall 2020 Midterm	Q6, Q7	Solutions
Summer 2020 Final	Q3	Solutions
Summer 2020 Midterm 1	Q8 (Vis), Q9 (Vis)	Solutions
Spring 2020 Checkpoint	Q3, Q5	Solutions
Fall 2019 Midterm 1	Q4, Q5	Solutions
Summer 2019 Midterm	Q4	Solutions
Spring 2019 Final	Q1	Solutions
Spring 2019 Midterm 1	Q4	Solutions
Fall 2018 Final	Q11 (Cleaning, EDA, Visualization)	Solutions
Fall 2018 Midterm	Q3 (Visualization)	Solutions
Spring 2018 Final	Q7 (Visualization and EDA)	Solutions
Spring 2018 Midterm	Q13 (EDA and Visualization)	Solutions

Regular Expressions

Exam	Questions	Solutions
Fall 2025 Midterm 1	Q3, PrairieLearn	Solutions
Summer 2025 Final	Q1a, PrairieLearn	Solutions
Summer 2025 Midterm	Q2, PrairieLearn	Solutions
Spring 2025 Final	Q1e	Solutions
Spring 2025 Midterm	Q2, PrairieLearn	Solutions
Fall 2024 Final	Q3c	Solutions
Fall 2024 Midterm	Q4a-c	Solutions
Summer 2024 Midterm	Q2f	Solutions
Spring 2024 Final	Q1d	Solutions
Spring 2024 Midterm	Q1c, Q3c-d	Solutions
Fall 2023 Final	Q1d, Q1e	Solutions
Fall 2023 Midterm	Q3	Solutions
Summer 2023 Midterm	Q3	Solutions
Spring 2023 Midterm	Q2	Solutions
Fall 2022 Midterm	Q4	Solutions
Spring 2022 Midterm 1	Q4	Solutions
Summer 2022 Midterm	Q3	Solutions
Fall 2021 Midterm	Q5	Solutions
Summer 2021 Midterm	Q8	Solutions
Spring 2021 Midterm	Q4	Solutions
Fall 2020 Midterm	Q5	Solutions
Summer 2020 Final	Q12	Solutions
Summer 2020 Midterm 1	Q6	Solutions
Spring 2020 Checkpoint	Q4	Solutions
Fall 2019 Midterm 1	Q3	Solutions
Summer 2019 Midterm	Q3	Solutions
Fall 2018 Midterm	Q6	Solutions
Spring 2018 Final	Q17	Solutions
Fall 2017 Final	Q1	Solutions

Data Collection, Sampling and Probability

Exam	Questions	Solutions
Fall 2025 Midterm 2	Q5, PrairieLearn	Solutions
Fall 2025 Midterm 1	Q5, PrairieLearn	Solutions
Summer 2025 Final	Q1c, Q4a-d, PrairieLearn	Solutions
Summer 2025 Midterm	Q1h, Q3d-f, PrairieLearn	Solutions
Spring 2025 Final	Q1a, Q3d	Solutions
Spring 2025 Midterm	Q3a-f, PrairieLearn	Solutions
Fall 2024 Final	Q1a-b	Solutions
Fall 2024 Midterm	Q1b-c	Solutions
Summer 2024 Final	Q1a-c, Q7c (Expectation)	Solutions
Summer 2024 Midterm	Q1a-c, Q1e (Expectation), Q3a	Solutions
Spring 2024 Final	Q3a, Q5	Solutions
Spring 2024 Midterm	Q3a-b	Solutions
Fall 2023 Final	Q1a	Solutions
Fall 2023 Midterm	Q4a-c	Solutions
Summer 2023 Midterm	Q1	Solutions
Spring 2023 Midterm	Q3	Solutions
Fall 2022 Midterm	Q2, Q4	Solutions
Spring 2022 Midterm 1	Q1	Solutions
Summer 2022 Midterm	Q1b, Q2, Q6a-b	Solutions
Fall 2021 Final	Q4	Solutions
Summer 2021 Final	Q2, Q3	Solutions
Summer 2021 Midterm	Q2, Q3	Solutions
Spring 2021 Final	Q14	Solutions
Spring 2021 Midterm	Q1	Solutions
Fall 2020 Final	Q1	Solutions
Fall 2020 Midterm	Q1, Q2 (Probability)	Solutions
Summer 2020 Final	Q1 (Expectation)	Solutions
Summer 2020 Midterm 1	Q1, Q2 (Probability), Q3 (Expectation and Variance)	Solutions
Spring 2020 Checkpoint	Q1	Solutions
Fall 2019 Midterm 1	Q2, Q6	Solutions
Summer 2019 Final	Q3	Solutions
Summer 2019 Midterm	Q2	Solutions
Spring 2019 Final	Q9	Solutions
Spring 2019 Midterm 1	Q2	Solutions
Fall 2018 Final	Q5, Q6 (Bootstrap and Sampling Distribution)	Solutions
Fall 2018 Midterm	Q1	Solutions
Spring 2018 Final	Q2 (Data Collection and Cleaning), Q13 (Probability)	Solutions
Spring 2018 Midterm	Q1 (Data Design and Bias)	Solutions

Modeling/Regression

Exam	Questions	Solutions
Fall 2025 Midterm 2	Q2-3, Q6-7, PrairieLearn	Solutions
Summer 2025 Final	Q2b, PrairieLearn	Solutions
Summer 2025 Midterm	Q4a, Q4c, PrairieLearn	Solutions
Spring 2025 Final	Q2a-b	Solutions
Spring 2025 Midterm	Q3g-h, Q4, PrairieLearn	Solutions
Fall 2024 Final	Q3g-j, Q4	Solutions
Spring 2024 Midterm	Q6	Solutions
Fall 2023 Midterm	Q5c, Q6	Solutions
Summer 2023 Midterm	Q4, Q5	Solutions
Spring 2023 Midterm	Q6, Q7	Solutions
Fall 2022 Midterm	Q2, Q3, Q5	Solutions
Spring 2022 Midterm 2	Q3	Solutions
Spring 2022 Midterm 1	Q7, Q8, Q9	Solutions
Summer 2022 Midterm	Q1c, Q6c, Q6e, Q6f	Solutions
Fall 2021 Midterm	Q3	Solutions
Spring 2021 Final	Q4d-f, Q8, Q10	Solutions
Spring 2021 Midterm	Q8	Solutions
Fall 2020 Final	Q5b	Solutions
Fall 2020 Midterm	Q9	Solutions
Summer 2020 Final	Q4, Q5, Q7, Q2, Q3	Solutions
Summer 2020 Midterm 2	Q1, Q2, Q3	Solutions
Spring 2020 Checkpoint	Q6, Q7	Solutions
Fall 2019 Final	Q2, Q4	Solutions
Fall 2019 Midterm 2	Q2	Solutions
Summer 2019 Final	Q4, Q5, Q6, Q7	Solutions
Spring 2019 Final	Q4, Q5	Solutions
Spring 2019 Midterm 2	Q3, Q4, Q5	Solutions
Fall 2018 Final	Page 20, 21	Solutions
Fall 2018 Midterm	Page 10, 17, 18	Solutions
Spring 2018 Final	Page 15-20	Solutions
Spring 2018 Midterm	Page 14, 15	Solutions
Fall 2017 Final	Page 20-24	Solutions
Fall 2017 Midterm	Page 15-17	Solutions
Spring 2017 Final	Page 11-13, 18-19	Solutions

Loss Functions & Gradient Descent

Exam	Questions	Solutions
Fall 2025 Midterm 2	Q3, PrairieLearn	Solutions
Fall 2025 Midterm 1	Q6, Q7, PrairieLearn	Solutions
Summer 2025 Final	Q2a, Q2c, Q2d(iii)-(iv), PrairieLearn	Solutions
Summer 2025 Midterm	Q4b-c, PrairieLearn	Solutions
Spring 2025 Final	Q2e-g	Solutions
Spring 2025 Midterm	Q3e, PrairieLearn	Solutions
Fall 2024 Final	Q3a, Q5a-b, Q6c	Solutions
Spring 2024 Final	Q2	Solutions
Spring 2024 Midterm	Q5	Solutions
Fall 2023 Final	Q2	Solutions
Fall 2023 Midterm	Q5a-b, Q7	Solutions
Summer 2023 Midterm	Q6	Solutions
Spring 2023 Midterm	Q6	Solutions
Fall 2022 Midterm	Q5	Solutions
Spring 2022 Midterm 2	Q4	Solutions
Summer 2022 Midterm	Q1a, Q6d (Gradient Descent)	Solutions
Summer 2021 Midterm	Q12 (Loss Function)	Solutions
Spring 2021 Final	Q5 (Gradient Descent)	Solutions
Spring 2021 Midterm	Q6 (Loss Function)	Solutions
Fall 2020 Final	Q5a, Q8	Solutions
Fall 2020 Midterm	Q8	Solutions
Summer 2020 Final	Q5 (Gradient Descent), Q7 (Loss Function)	Solutions
Summer 2020 Midterm 2	Q1 (Loss Function), Q6 (Gradient Descent)	Solutions
Spring 2020 Checkpoint	Part 8 (Q30-38) (Gradient Descent)	Solutions
Fall 2019 Final	Q2 (Loss Function)	Solutions
Fall 2019 Midterm 2	Q5 (Gradient Descent)	Solutions
Summer 2019 Final	Q4 (Loss Function), Q7(b), Q7(c) (Gradient Descent)	Solutions
Fall 2018 Midterm	Q6 (Gradient Descent)	Solutions
Spring 2018 Final	Q3 (Loss Function), Q23 (Loss Function), Q24 (Loss Function), Q34 (Gradient Descent), Q35 (Gradient Descent)	Solutions
Spring 2018 Midterm	Q25 (Loss Function), Q26 (Loss Function), Q27 (Loss Function and Gradient Descent)	Solutions
Fall 2017 Final	Q24 (Gradient Descent)	Solutions
Fall 2017 Midterm	Q22 (Gradient Descent), Q23 (Loss Function), Q24 (Loss Function)	Solutions
Spring 2017 Final	Q1.1 (Loss Function), Q1.2 (Gradient Descent)	Solutions

Feature Engineering and Dimensionality

Exam	Questions	Solutions
Fall 2025 Midterm 2	Q2, Q4, Q6, PrairieLearn	Solutions
Summer 2025 Midterm	Q3c, PrairieLearn	Solutions
Spring 2025 Midterm	Q4b, PrairieLearn	Solutions
Fall 2024 Final	Q3d	Solutions
Spring 2024 Final	Q3b-d	Solutions
Spring 2022 Midterm 2	Q6	Solutions
Fall 2021 Midterm	Q1	Solutions
Summer 2021 Final	Q8	Solutions
Fall 2020 Final	Q12	Solutions
Summer 2020 Final	Q4	Solutions
Summer 2020 Midterm 2	Q4	Solutions
Fall 2019 Midterm 2	Q6	Solutions
Spring 2019 Final	Q3	Solutions
Spring 2019 Midterm 2	Q1	Solutions
Fall 2017 Final	Page 29	Solutions
Spring 2017 Final	Q3	Solutions

Regularization and Cross Validation

Exam	Questions	Solutions
Fall 2025 Midterm 2	Q1, Q6, PrairieLearn	Solutions
Summer 2025 Final	Q2d, PrairieLearn	Solutions
Spring 2025 Final	Q2a, Q2c-d	Solutions
Fall 2024 Final	Q3f, Q4a-c	Solutions
Spring 2024 Final	Q4b-d	Solutions
Spring 2022 Midterm 2	Q5	Solutions
Fall 2021 Midterm	Q1	Solutions
Summer 2021 Final	Q4	Solutions
Spring 2021 Final	Q2 (CV, decision trees), Q13	Solutions
Fall 2020 Final	Q7	Solutions
Summer 2020 Final	Q4, Q5, Q11	Solutions
Summer 2020 Midterm 2	Q5	Solutions
Fall 2019 Final	Q12b, Q12e (Page 19)	Solutions
Fall 2019 Midterm 2	Q2f (Page 5), Q3-4 (Page 6-7)	Solutions
Summer 2019 Final	Q6d, Q6g (Page 7)	Solutions
Spring 2019 Final	Q5b (Page 5)	Solutions
Spring 2019 Midterm 2	Q4c-d (Page 5), Q5c-d (Page 6)	Solutions
Fall 2018 Final	Q15-19 (Page 15-16) (Cross-Val), Q20-21 (Page 17)	Solutions
Spring 2018 Final	Q32-33 (Page 19-20), Q38 (Page 24) (Cross-Val)	Solutions
Fall 2017 Final	Q18 (Page 21), Q30 (Page 30) (Cross-Val)	Solutions
Spring 2017 Final	Q16-18 (Page 11-13)	Solutions

Bias and Variance

Exam	Questions	Solutions
Fall 2025 Midterm 2	Q6, PrairieLearn	Solutions
Spring 2025 Final	Q2b	Solutions
Fall 2024 Final	Q3b	Solutions
Spring 2024 Final	Q6	Solutions
Spring 2022 Midterm 2	Q2	Solutions
Fall 2021 Midterm	Q2	Solutions
Spring 2021 Final	Q12	Solutions
Fall 2020 Final	Q6	Solutions
Summer 2020 Final	Q5	Solutions
Fall 2019 Midterm 2	Q3	Solutions
Summer 2019 Final	Q6	Solutions
Spring 2019 Final	Q8	Solutions
Fall 2018 Final	Q13, Q14 (Page 17-18)	Solutions
Fall 2017 Final	Q16-17 (Page 24)	Solutions
Spring 2017 Final	Q7	Solutions

Inference

Exam	Questions	Solutions
Fall 2025 Midterm 2	Q7, PrairieLearn	Solutions
Summer 2025 Final	Q4d-g, PrairieLearn	Solutions
Spring 2025 Final	Q3a-c	Solutions
Summer 2020 Final	Q8	Solutions
Spring 2019 Final	Q6d (Page 6), Q9 (Page 8)	Solutions
Fall 2018 Final	Q5-6 (Pages 7-8)	Solutions
Spring 2018 Final	Q2a, Q2c-e (Page 3), Q41a, Q41c (Page 25)	Solutions
Fall 2017 Final	Q10-11 (Pages 15-17)	Solutions
Fall 2017 Midterm	Q25-27 (Pages 18-19)	Solutions

SQL

Exam	Questions	Solutions
Summer 2025 Final	Q1d-e, PrairieLearn	Solutions
Spring 2025 Final	Q1f	Solutions
Fall 2024 Final	Q2	Solutions
Fall 2024 Midterm	Q1a	Solutions
Summer 2024 Final	Q3a-d	Solutions
Spring 2022 Midterm 2	Q1	Solutions
Fall 2021 Midterm	Q6	Solutions
Summer 2021 Midterm	Q9, Q10	Solutions
Spring 2021 Midterm	Q3	Solutions
Fall 2020 Midterm	Q3	Solutions
Summer 2020 Midterm 1	Q4, Q5	Solutions
Spring 2020 Checkpoint	Q2	Solutions

Logistic Regression & Classification

Exam	Questions	Solutions
Summer 2025 Final	Q3a-c, PrairieLearn	Solutions
Spring 2025 Final	Q3e-f	Solutions
Fall 2024 Final	Q6a	Solutions
Spring 2024 Final	Q8	Solutions
Summer 2021 Final	Q6, Q7	Solutions
Spring 2021 Final	Q4a-c, Q9	Solutions
Fall 2020 Final	Q9	Solutions
Summer 2020 Final	Q6	Solutions
Summer 2020 Midterm 2	Q7, Q8	Solutions
Fall 2019 Final	Q5-7 (Page 11-12), Q12c (Page 19)	Solutions
Fall 2019 Midterm 2	Q7 (Page 11-12)	Solutions
Summer 2019 Final	Q7 (Page 8-9), Q8	Solutions
Spring 2019 Final	Q5a (Page 5)	Solutions
Spring 2019 Midterm 2	Q5 (Page 6)	Solutions
Fall 2018 Final	Q9-12 (Page 11-12)	Solutions
Spring 2018 Final	Q36-40 (Page 26-27)	Solutions
Fall 2017 Final	Q22 (Page 29-30), Q23 (Page 26)	Solutions
Spring 2017 Final	Q5 (Page 17-19)	Solutions

PCA

Exam	Questions	Solutions
Summer 2025 Final	Q3d, PrairieLearn	Solutions
Spring 2025 Final	Q4a-b	Solutions
Fall 2024 Final	Q7	Solutions
Spring 2024 Final	Q9	Solutions
Spring 2021 Final	Q11	Solutions
Fall 2020 Final	Q10	Solutions
Summer 2020 Final	Q7, Q8	Solutions
Fall 2019 Final	Q8 (Page 14)	Solutions
Fall 2019 Midterm 2	Q1 (Pages 3-4)	Solutions
Summer 2019 Final	Q2b (Page 4)	Solutions
Spring 2019 Final	Q6c (Page 6)	Solutions

Clustering & Big Data

Exam	Questions	Solutions
Summer 2025 Final	Q3e-g, PrairieLearn	Solutions
Spring 2025 Final	Q4c-d	Solutions
Fall 2024 Final	Q8	Solutions
Spring 2024 Final	Q10	Solutions
Summer 2021 Final	Q9, Q10	Solutions
Fall 2020 Final	Q13, Q14	Solutions
Summer 2020 Final	Q2	Solutions
Fall 2019 Final	Q10 (Page 18) (Clustering)	Solutions
Spring 2019 Final	Q10 (Page 9)	Solutions
Fall 2018 Final	Q1c (Page 4), Q2-4 (Page 6)	Solutions
Spring 2018 Final	Q14-15 (Page 10)	Solutions
Fall 2017 Final	Q12-15 (Pages 18-19)	Solutions
Spring 2017 Final	Q23-24 (Pages 16-17), Q29-32 (Pages 20-21)	Solutions

Decision Trees [no longer in scope]

Exam	Questions	Solutions
Summer 2024 Final	Q5e-f	Solutions
Spring 2021 Final	Q2, Q3	Solutions
Fall 2020 Final	Q11	Solutions
Summer 2020 Final	Q1	Solutions
Fall 2019 Final	Q10 (Page 17), Q12d (Page 19)	Solutions
Summer 2019 Final	Q9 (Pages 10-11)	Solutions
Spring 2019 Final	Q2 (Page 2)	Solutions