COSC 6323: Statistical Methods – SPRING 2025

KEY INFORMATION
Instructors
  • Prof. Ioannis Pavlidis — ipavlidis[@]uh.edu — Office Hours: Fri 3–4 pm @ TEAMS
  • Fettah Kiran — fkiran[@]uh.edu — Office Hours: Tue 12–1 pm @ TEAMS
Grading and Project
  • 3 × 33.33% — Project milestones

Grade thresholds: A ≥ 93, A− ≥ 90, B+ ≥ 85, B ≥ 80, B− ≥ 75, C+ ≥ 70, C ≥ 65, C− ≥ 60, D+ ≥ 55, D ≥ 50, F < 50.

Day, Time, and Room
  • Friday, 4:00–7:00 pm @ Room 315 in Health 1 and @ TEAMS
Required Software
Class Repository
References
  1. Donna L. Mohr, William J. Wilson, Rudolf J. Freund. Statistical Methods. 4th Edition. Academic Press, 2021.
  2. Devore, J.L., Berk, K.N. and Carlton, M.A. Modern Mathematical Statistics With Applications. Springer, 2012.
  3. Terence C. Mills. Applied Time Series Analysis. Academic Press, 2019.
COURSE OUTLINE
Lesson 1: Statistics, Machine/Deep Learning, and Data Science
01/17/2025

Topics to Cover: Situating statistics, machine/deep learning, and data science; observations and variables; types of measurements for variables; distributions; numerical descriptive statistics; exploratory data analysis; bivariate data; data collection; R tutorial.

Lesson 2: Probabilities and Sampling Distributions
01/24/2025

Topics to Cover: Probability; discrete probability distributions; continuous probability distributions; sampling distributions.

Lesson 3: Principles of Inference
01/31/2025

Topics to Cover: Hypothesis testing; estimation; sample size; assumptions.

Lesson 4: Inferences on a Single Population
02/07/2025

Topics to Cover: Inferences on the population mean; inferences on a proportion; inferences on the variance; assumptions.

Lesson 5: Inferences for Two Populations
02/14/2025

Topics to Cover: Inferences on the difference between means using independent samples; inferences on variances; inferences on means for dependent samples; inferences on proportions; assumptions and remedial methods.

Lesson 6: Inferences for Two or More Populations
02/21/2025

Topics to Cover: Analysis of variance; linear model; assumptions; specific comparisons; random models; unequal sample sizes; analysis of means.

Lesson 7: Linear Regression
02/28/2025

Topics to Cover: The regression model; estimation of parameters; inferences for regression; correlation; regression diagnostics.

Project Milestone 1 due at 4 pm on 02/28/2025

Lesson 8: Multiple Regression
03/07/2025

Topics to Cover: The multiple regression model; estimation of coefficients; inferential procedures; correlations; special models; multicollinearity; variable selection; detection of outliers.

Lesson 9: Dummy/Interval Variable Models
03/21/2025

Topics to Cover: The dummy variable model; unbalanced data; models with dummy and interval variables; weighted least squares; correlated errors.

Lesson 10: Experimental Designs
03/28/2025

Topics to Cover: Two-factor factorial experiment; randomized block design; randomized blocks with sampling; repeated measures designs.

Project Milestone 2 due at 4 pm on 03/31/2025

Lesson 11: Categorical Data
04/04/2025

Topics to Cover: Hypothesis test for a multinomial population; goodness of fit using the χ² test; contingency tables; loglinear model.

Lesson 12: Logistic and Multinomial Regression
04/11/2025

Topics to Cover: Logistic regression; multinomial regression.

Lesson 13: Nonparametric Methods
04/18/2025

Topics to Cover: One sample; two independent samples; more than two samples; rank correlation; the bootstrap.

Lesson 14: Time Series
04/25/2025

Topics to Cover: Time series and their features; stationary processes (ARMA); nonstationary processes (ARIMA).

Project Milestone 3 due at 4 pm on 04/25/2025

Project Presentations: Final Project Presentations
05/02/2025

Topics to Cover: Final project presentations.

GRADES AND STUDENT COMMENTS

Weekly Grades and Student Comments

Week 14 – April 25, 2025

Comments from students

★★★★★
Thanks for a great class!

★★★★★
Thank you for the class and for the semester! It was really enjoyable.

★★★★★
I’ve really enjoyed this course and learned so much. It was such a relief to hear there’s no presentation, especially since MS3 was a lot more time-consuming than MS1 and MS2. I really appreciate the Professor’s effort and enthusiasm for the subject.

★★★★★
I really liked this course!

Week 13 – April 18, 2025

Comments from students

★★★★★
I really find this clase interesting and I liked that it is relevant for our project.

Week 12 – April 11, 2025

Comments from students

★★★★★
I think that the topics that we saw in this class are highly important for statistical research.

Week 11 – April 04, 2025

Comments from students

★★★★★
Yes, I really liked learning about the Loglinear Model

Week 10 – March 28, 2025


Comments from students

★★★★★
I really like the topic and find it interesting

Week 9 – March 21, 2025

Comments from students

★★★★☆
It was a useful class, and very interesting

Week 8 – March 07, 2025

Comments from students

★★★★☆
This was an interesting topic

★★★★★
Multi and partial regression is a very interesting process however, I am particular excited at the use of data from the Mayo Clinic. Medical informatics work is very intriguing to me in this space.

Week 7 – February 28, 2025


Comments from students

★★★★★
I'm interested in this topic

★★★★★
A friend of mine who is a data scientist said to me "you can solve 90% of your problems with linear regression" and I thought that was funny.

★★★★★
The class was interesting and engaging, and the professor presented the material clearly and effectively.

★★★★★
The second part of the class is exciting. But if you could share on how we could get extra points by giving details through a text/message. it would be better for us to remember and solve.

Week 6 – February 23, 2025

Comments from students

★★★★☆
I missed the class last week, catching up with recording.

★★★★★
I found this class really interesting.

Week 5 – February 16, 2025

Comments from students

★★★☆☆
I was away at the International Neuropsychological Society conference and missed the lecture, but I plan to watch the recording.

★★★★★
A list of tasks for Assignment 1 would be helpful.

Week 4 – February 09, 2025

Comments from students

★★★★★
I really liked it when we directly analyzed the real research data that is going on at the moment. It is helpful for us to better understand on what we are plotting when we analyze in class directly.

Week 3 – Jan 31 , 2025

Comments from students

★★★★★
I like that the class is divided by theorical and practical part

★★★★☆
I would appreciate a more structured way of teaching, with proper notes and/or slides.

★★★★★
This week's class was really informative and enjoyable. Thank you!

★★★★★
The class is good and interesting

★★★★★
I really enjoyed this week's lecture. The focus on inference gave a real-world feel to how we should be applying the techniques we are learning. I particularly enjoyed the coding portion as well and was excited to receive the data for our project.

Week 2 – January 26, 2025

Comments from students

★★★★★
No comments so far everything is good.

★★★★★
In todays R session we covered content for two weeks. Hope next week we will have more time to explain the content.

★★★★☆
Looking forward to this

★★★★★
EVERYTHING IS GOOD.

★★★★☆
Everything was clear!

★★★★☆
The homework is challenging but useful.

★★★★☆
I am of the opinion that some more time has to be given to explain and understand R programming so that it would be easy to work on the assignments.

Week 1 – January 19, 2025

Comments from students

★★★★★
Hope there was more time to explain the examples where form R studio.

★★★★★
Class looks good but the lecture was bit hurry

★★★★★
Nice class

★★★★★
I would like to thank both Professor and TA for their performance and care.

★★★★★
A bit loud and clear voice will make the class more interesting.

★★★★☆
Everything is good.

★★★★☆
I learned a lot of basic knowledge of R. Thank you!

★★★★★
Great first week with much useful information! However, the R file that the TA showed was not available for the students, which made it a bit harder to follow. Please make it available since it has many useful tips for R & RStudio!

★★★★★
No comments so far the class is good.

★★★★★
More Hands-on learning would be benificial.

★★★★☆
Looking forward to it.

★★★★★
I think we need to know more details about the project.

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