## Business Statistics, Fall 2021

### Instructor

**Tengyuan Liang**, firstname.lastname@chicagobooth.edu

### TAs

**Shuo-Chieh Huang**, shuochieh@chicagobooth.edu

**Yuexi Wang**, yuexi.wang@chicagobooth.edu

**Alex Zhao**, alexzhao@chicagobooth.edu

### Syllabus

**Syllabus**

### Lecture Notes

**Section 1**

**Section 2**

**Section 3**

**Section 4**

**Section 5**

Key Points

### Practice Exam

Practice Midterm, Practice Solution

Practice Final, Practice Solution

Midterm Statistics, Midterm Solution

### Homework

**Homework 1**, Solution 1

**Homework 2**, Solution 2

**Homework 3**, Hint for Homework 3, Solution 3, Solution Q1 and Q2 in R, Q1 in Excel, Q2 in Excel

**Homework 4**, Solution 4

**Homework 5**, Solution 5

**Homework 6**, Solution 6

**Homework 7**, Solution 7

**Homework 8**, Solution 8

Questions about the homework can be posted to Canvas Discussion section. TAs will answer
them within 24-48 hrs during weekdays. I recommend everyone to do *all the homework*.

### R Scripts (optional)

*Dummies and Interactions*

*SLR and MLR*

*Annual Return*, *Hint for Discussion*

*Stock Hedge*

Section 1

Section 2

Section 3

Section 4

Section 5

### Datasets

Shock Absorber Data

Apple, Intel, Safeway Data

Profits

Zagat

Baseball

Orion Bus

Beauty

Mid City

Salary Data

S&P 500 cleaned

### Other Fun Statistics

FiveThirtyEight article

COVID-19 prevalence rate

Simpson’s Paradox: video1, video2

Guessing Correlation: wiki, game

Spurious Correlation

Demonstration of Normal Approximation/CLT, and more

Demonstration of Confidence Interval

Chicago Booth Review Article

AI? Not yet

XKCD, hypothesis testing, can you get the point?

Moneyball

Simple Linear Regression App, play!

XKCD, slope hypothesis testing, can you figure out why?