Statistical Methods

Math 222 - Spring 2018

Friday, April 27

Factors for two-way tables: Politics vs. education
Bootstrapping review: Number of siblings
CSV data: Catnip and aggression

Wednesday, April 25

Multiple logistic regression: E-mail spam filter

Monday, April 23

Logistic regression: Aphids vs. pesticide
Practice: Space shuttle Challenger O-rings

Wednesday, April 18

Two-Way ANOVA: Gender and Major vs. SAT scores

Monday, April 16

Two-way ANOVA: Income vs. Region and Religion

Thursday, April 12

Pairwise comparisons in ANOVA: Chicken feed

Wednesday, April 11

Contrasts in one-way ANOVA : Dandruff shampoos

Monday, April 9

One-way ANOVA: Baseball positions at bat

Friday, April 6

Model selection in multiple regression: Cats jumping

Thursday, April 5

Multiple regression: Baby birthweights (source file: here)

Wednesday, April 4

Multiple regression: 5K race times vs. age and gender

Friday, March 30

Log-transformations & linear regression: House prices vs. square footage
Practice: Kleiber's Law

Wednesday, March 28

Linear regression prediction & confidence intervals: Predicting height from foot length
Practice: 1969 Vietnam draft lottery

Monday, March 26

Linear regression inference: Marriage ages

Thursday, March 22

Two-sample quantitative variable methods: Men vs. women talking

Wednesday, March 21

Linear regression: Midterm grades
Practice: Lightning fatalities

Monday, March 19

Practice: Three scatterplot/correlation examples
Textbook: Residual plots

Friday, March 16

Permutation test for two-way tables: Gender vs. spare time
Practice: Water taste test

Wednesday, March 14

Chi-squared test for association: Gender vs. self-image
Practice: OpenIntro Stats exercise 6.46
Two-way tables: How to make two-way tables in R

Friday, March 2

Two-sample log-transformations: Cloud seeding w/ log-transformed data

Wednesday, February 28

Skewed two-sample data: Cloud seeding

Monday, February 26

Two-sample quantitative data: Age discrimination case
Two-sample t-distribution confidence interval accuracy: NBA Salaries

Wednesday, February 21

Example randomized controlled experiment: Polio vaccine trials
Permutation test: Dolphin therapy (source file: here)

Wednesday, February 14

Two-way tables and proportion tests: High school drug testing

Friday, February 9

Log-transforms: Turbidity analysis

Thursday, February 8

Bootstrap confidence intervals: February rainfall

Wednesday, February 7

Bootstrap practice: Heroin treatment times
Bootstrap distributions: Marriage age differences

Friday, February 2

Matched pairs data: Marriage ages
Matched pairs data: Helium filled footballs

Wednesday, January 31

Quantitative data: Cretaceous nitrogen levels
QQ-plots and the t-distribution: Body temperatures

Monday, January 22

R code example: Binomial distribution plot

Friday, January 19

Introduction to R and Rstudio

Thursday, January 18

Image: Zener cards
Image: Bob vs. Tim

Monday, January 15

Video: Helper, hinderer study