Professor: Joe Roith
Office: 403 Regents Hall of Mathematical Sciences (RMS)
Email: roith1@stolaf.edu
Note: I will respond to emails as quickly as possible during the week before 5 PM. I may respond to emails in the evenings or on weekends, but do not rely on it.
Drop-in office hours: You can book appointment slots with me on M/F 2 - 3 PM or T/Th 9:30 - 11 AM. Each appointment slot is 15 min.
You may also schedule an appointment with me outside of these times (check my calendar for availability).
Class meetings: We will meet synchronously for most class periods (especially at the beginning of the semester) on MWF 12:55 - 1:50 PM.
Zoom link for class sessions (will work for all meetings and is available on Moodle)
Passcode: VariationD
Course computing:
Course technology:
Moodle: All course files and information will be posted on our Moodle site. Check Moodle daily for updates!
Zoom: Class meetings will be held via video conference. Recordings can be made available by prior request and my approval.
Google Meet: This will be the primary mode for my virtual office hours.
Google Docs and Spreadsheet: I will occasionally ask you to work in small groups and submit collaborative work.
R and RStudio: This is a free statistical software used by many in the statistical and data science industry. You will use and alter code I provide as well as write your own and run it through our campus RStudio server (the link above).
Other: We will use other online resources, applets, and software throughout the semester. Please do not hesitate to seek help with using any of these technologies.
Textbook: Introductory Statistics with Randomization and Simulation (2014), David M. Diez, Christopher D. Barr, Mine Çetinkaya-Rundel
Available free online or from Amazon for under $10
Companion website: https://www.openintro.org/stat/textbook.php
Link to the “real” syllabus: Shadow Syllabus for all your classes
This will be a challenging semester for both students and professors. With so much uncertainty, there are bound to be plans that fall through and changes that need to be made. With that in mind, this is how I envision the structure of our course at this moment.
Our class will be entirely online and I envision a combination of synchronous and asynchronous styles. Most days during our scheduled class time we will meet via Zoom. These meetings will consist of lectures at the the beginning of the semester and gradually be replaced with more discussions, activities, and small group work as the semester moves along. I don’t like to lecture over Zoom, so I will try to keep it to a minimum once we establish a solid conceptual foundation.
A large part of the content delivery for my classes are interactive online tutorials. You can expect to see 2-3 of these tutorials each week, and their completion is required before we meet. I will update Moodle weekly with the tutorial links and when they need to be completed. Everyone will move through these at their own pace, but typically they are intended to take between 30-60 minutes each. My intent is that you will find these much more engaging and easier to follow than recorded video lectures or readings.
In addition to the tutorials, I do expect you to read the textbook, participate in class worksheets, and complete homework and quizzes. In general, this is what you can expect on a weekly basis for this class:
Textbook and article readings
Some Zoom lectures with slides
Interactive online tutorials
Worksheets, activities, and small group discussions completed during Zoom meetings
Homework and Moodle quizzes
Statistics is the science of learning from data. By now you are aware that vast amounts of data are collected every moment in a variety of settings like political polls, clinical trials, stock markets, and social media user metrics to name just a few. Statistical methods are especially critical to the sciences, as they are our only real way to test theories, quantify natural phenomenon, create accurate predictions, and make evidence-based decisions.
Some of the practical ways in which statistics is used in the sciences include:
Medicine (monitoring patient information and history for more accurate diagnosis and prognosis)
Biostatistics (designing and analyzing clinical trials and epidemiological studies)
Bioinformatics (studying DNA data and human genetics as related to disease)
Actuary (performing analysis in the insurance and superannuation industry)
Ecology (environmental monitoring, species management, land surveying)
Climatology (weather forecasting using historical data)
Demography (studying the dynamics of human populations)
Psychometrics (constructing instruments for educational or psychological measurement)
Image processing (aiding in computer vision, facial detection, and remote sensing)
Statistics is a unique field of study as it lends itself equally to any of the areas mentioned above, but is built on its own theories and rules. We constantly evolve approaches to data collection, analysis, and interpretation. Although we use mathematics, statistics is quite different. Be prepared to think and read critically in this class. In addition, there is a language and vocabulary of statistics that is important to use properly.
To learn ways of investigating questions involving statistical concepts.
To develop basic skills in three key areas of statistics:
data collection – methods for obtaining meaningful data
data analysis – methods for exploring, organizing, describing, and modeling data
statistical inference – making decisions with data
To develop an understanding of statistical concepts and an ability to interpret the results of statistical analyses and to communicate those results using clear and precise statistical language.
To receive an exposure to statistical problems from a wide variety of sources (medical studies, newspaper surveys, sociology studies, etc.) and encompassing a variety of data types and collection methodologies.
To obtain practical experience in study planning, data collection, and the written communication of statistical concepts through individual homework assignments and group projects.
This course is centered on the idea that you will better understand and retain important statistical concepts if you build your own knowledge and practice using it, rather than by memorizing and regurgitating a set of facts. In order to actively construct knowledge in statistics, you must:
Engage in the material and think carefully about it; there are rarely rote, black and white solutions in statistics.
Become skillful at using R, a software package for exploring, modeling, and making decisions with data. You’ll have opportunities to use R inside and outside of class.
Expect small amounts of daily homework, decent-sized weekly homework sets, and longer projects which allow you to pull your knowledge together.
My expectations of you before each class:
Read the appropriate sections in the textbook (reading guides are available on Moodle, but I will not collect/grade them).
Complete any online tutorials assigned for that day.
Read any supplemental material posted.
I expect your participation in our classes. They will often include small and large group work. Occasionally you will be asked to lead a small group on a worksheet or task. This is not meant to intimidate you, put you on the spot, or force you to be the only contributor that day. It is meant to develop your leadership skills, promote interaction with classmates, and give me a chance to hear everyone’s voice. This will be a safe environment where mistakes and uncertainty are welcome!
Zoom is terrible… I’d much rather see you in person and watch your eyes roll at my terrible jokes. But, we’re doing the right thing this semester by not meeting in person. The hardest thing for me as a teacher is the mute button. Class is so much better when I can see and hear you. So I’m not requiring you to have your video on during class, but I highly encourage it (feel free to use a background if you’d like). And please unmute yourself when you have something to say.
This course will use R extensively. Course datasets and code are easily available on the R server which can be accessed by the link on Moodle. Supplemental materials will be provided on Moodle for learning to use R. Further instructions will be provided during class.
Learning R is necessary to do statistics. There is a learning curve and you will make mistakes, it just happens (and still happens to me). It is important that you take a breath, step back, and remember to seek help to resolve your issue. Come to my office hours, ask classmates for help, and ask me questions in class. Past students have found learning R to be ultimately very useful and even fun. R is freely downloadable for both Mac and PC at https://cran.r-project.org/, and it’s available on a St. Olaf server!
Often during our classes, I will ask you to share your screen and code. That means you may have to split your screen to watch and type at the same time. Keep up with the class or your group and be prepared to talk through your code or output.
Your course grade will be determined as follows:
| Grade Subgroup | Weight |
|---|---|
| Homework Assignments | 15% |
| Quizzes | 10% |
| Exams (3) | 10% each |
| Midterm project | 10% |
| Final Project | 25% |
| Participation | 10% |
College wide grading benchmarks can be found at: http://catalog.stolaf.edu/academic-regulations-procedures/grades/
There will be weekly homework assignments. Homework assignments are designed to give you practice applying new statistical concepts to new data contexts. Homework will be drawn from the exercises at the end of each chapter as well as additional questions. The homework assignments are long, so you should work through them as we go along. Many of the problems require computation. Code snippets in these cases will usually be provided.
You are encouraged to discuss problems together, but each person must hand in their own work.
You must show your work for full credit.
Homework is ALWAYS due by 11:59 PM each Monday. Anything after this will be assessed a late penalty. This includes late assignments due to technical issues. Plan ahead.
I expect that you will start soon after receiving the assignment. The assignments are definitely not designed to be one-night jobs.
Homework is completed using RMarkdown and you are required to upload both the RMarkdown (.Rmd) file and knitted pdf file to Moodle.
We will have several short Moodle quizzes each week. You will have 1 hour to complete the quiz and two attempts. You must complete the quiz independently. You may use the textbook, notes, slides, worksheets, tutorials, or any other materials when taking the quizzes. All weekly quizzes must be completed by 11:59 PM each Monday.
The midterm and final exams will be take-home to be completed individually. I will make the exam available on Friday after our class, and it will be due by 11:59 PM the following Sunday. The final will follow a similar timeline, only due during our scheduled final time slot.
These exams will focus on your abilities to use the statistical software, to interpret results, to express an understanding of statistical concepts, and to engage in statistical thinking on open-ended questions. They will not focus on plug-and-chug mathematics or hairy mathematical proofs. Make-up exams will be granted only under very special circumstances, and only if arranged in advance.
Statistics is best learned by getting hands-on with real data. And while learning the correct analysis is a part of this course, communicating and reading statistical analysis is another large part. You will complete one midterm project for this class. It will be a short (~2 page) summary of exploratory data analysis for a data set. I will provided data options and guidelines shortly after we begin the semester.
All projects will be performed in small groups of 2-3 to be determined by myself with your input.
This will be a more complete report and in depth analysis of a research question using data either found or provided. You will be expected to submit a project proposal, perform background research, develop a methods description, report your results, and discuss the implications of your findings. You will go through multiple drafts and perform peer reviews for classmates.
All projects will be performed in small groups of 2-3 to be determined by myself with your input.
Participation in this class can take several different forms: participation in discussions, contributing to small group activities, peer reviews of projects, attending office hours, and plenty of other ways. Be prepared to actively engage in all of these areas for full participation credit.
You can all be successful in this class! If you are struggling or if you’re feeling good about things but have some questions, there are several resources:
Come see me during my office hours, or make an appointment.
The TA’s for this course will facilitate some homework sessions throughout the week. I will post more information on Moodle as we coordinate this across the different sections.
Connect with your classmates, make friends and form study groups. Other than improving your learning, you’ll get to talk with someone who doesn’t live in the same home as you!
Visit the Academic Support Center if you want to improve your general study skills and habits.
This section of Stat 110 is supported by Supplemental Instruction (SI). SI is a series of weekly review sessions for students lead by the SI Leader: Owen Cromwell. SI is provided for all students in the course who want to acquire effective learning strategies, develop a stronger understanding of course material, and improve their grades. In most cases, regular SI attendance results in at least one letter grade higher than if a student never attended. SI is a structured and collaborative learning environment where students can further engage with course material and enhance their learning. SI sessions will start the first week of class and end the last day of classes. Faculty support and SI are the primary resources for students enrolled in this class.
| Session Days | Times |
|---|---|
| Sundays: | 7:30 - 8:10 PM |
| Tuesdays: | 7:30 - 8:10 PM |
| Thursdays: | 7:50 - 8:30 PM |
A link to these Zoom sessions will be available on Moodle.
I am committed to supporting the learning of all students in my class. If you have already registered with Disability and Access (DAC) and have your letter of accommodations, please meet with me as soon as possible to discuss, plan, and implement your accommodations in the course. If you have or think you have a disability (learning, sensory, physical, chronic health, mental health or attention), please contact Disability and Access staff at 507-786-3288 or by visiting wp.stolaf.edu/academic-support/dac.
In keeping with St. Olaf College’s mission statement, this class strives to be an inclusive learning community, respecting those of differing backgrounds and beliefs. As a community, we aim to be respectful to all citizens in this class, regardless of race, ethnicity, religion, gender or sexual orientation.
I acknowledge that my gender, race, and education contributes to my privilege hazard. I am committed to learning of and about inherent biases in my teaching and my field, and while they may not be intentional, they are not acceptable. I hope you will be comfortable approaching me if you feel any aspect of this class inhibits your ability to be equally heard and represented. Statistics can be a powerful tool to place a spotlight on the societal inequities we face, but we also need to confront the ways that data are racist, sexism, and classist. Throughout this course, we will use and discuss data that may make you feel slightly uncomfortable, but the goal is to approach important, complex questions through empirical data analysis.
Plagiarism, the unacknowledged appropriation of another person’s words or ideas, is a serious academic offense. It is imperative that you hand in work that is your own, and that cites or gives credit to others whenever you draw from their work. Please see St. Olaf’s statements on academic integrity and plagiarism at: https://wp.stolaf.edu/thebook/academic/integrity/. See also the description of St. Olaf’s honor system at: https://wp.stolaf.edu/honorcouncil/
St. Olaf’s Academic Integrity Policy, including the Honor System, is an integral part of your academic experience. I consider any violation of this code to be extremely serious and will handle each case appropriately. Here are some guidelines for this class. They do not cover all eventualities so if you have any doubts about a course of action you can ask me.
Homework assignments may be done in collaboration with other students (this is highly encouraged). However, the final product must written by you, in your own words, unless group assignments have been specifically allowed.
In no event can you copy answers from another student, a website, solutions manuals, or elsewhere.
Exams and quizzes MUST be completed independently. Any suspicion of collaborative work will result in reporting to the Honor Council and potential for immediate failure of the course.
When you sign your pledge on an exam that you have “neither given nor received assistance, and seen no dishonest work” I treat your signature as your solemn pledge that all your actions have been honorable. For example, if we have a take-home exam, you are assuring me that you shared no information with others, that you did not solicit or receive help from anyone besides me, etc.
Don’t treat the honor code lightly; if you’re in doubt about a possible violation, ask me.
Tentative Outline of topics: The following table provides a rough sketch of the topics we’ll cover during specific weeks, along with the associated reading assignments in our textbook:
| Week | Topics | Book Chapter |
|---|---|---|
| Day 1: 8/21 | Welcome, Introduction to stats | |
| Week 2: 8/24-8/28 | Data basics, data collection, experiments & studies | 1.1-1.5 |
| Week 3: 8/31-9/4 | Data visualization, randomization, hypothesis tests | 1.6-1.7, 2.1-2.3 |
| Week 4: 9/7-9/11 | Hypothesis test examples, error types | 2.3-2.4 |
| Week 5: 9/14-9/18 | Central Limit Theorem, Normal distributions, confidence intervals | 2.5-2.8 |
| Week 6: 9/21-9/25 | Examples and review | |
| Exam #1 handed out Friday, September 25. Due Monday, September 28 | ||
| Week 7: 9/28-10/2 | Single proportion, difference in two proportions, Chi-squared tests | 3.1-3.3 |
| Week 8: 10/5-10/9 | Chi-squared tests, one sample means, t-distribution | 3.4, 4.1 |
| Week 9: 10/12-10/16 | Paired t-tests, difference in means | 4.2-4.3 |
| Week 10: 10/19-10/23 | ANOVA, bootstrapping, review | 4.4-4.5 |
| Exam #2 handed out Friday, October 23. Due Monday, October 26 | ||
| Week 11: 10/26-10/30 | Regression lines, least squares, outliers | 5.1-5.3 |
| Week 12: 11/2-11/6 | Regression inference, transformations | 5.4 |
| Week 13: 11/9-11/13 | Multiple regression, project peer reviews | 6.1 |
| Week 14: 11/16 | Review | |
| Final Exam: Monday, November 23, 2-4 PM |