Week 7

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Want to know why I decided to pursue a Master’s in Data Science? Go here
Looking for DTSC 550 week 1? Week 1
Looking for DTSC 550 week 2? Week 2
Looking for DTSC 550 week 3? Week 3
Looking for DTSC 550 week 4? Week 4
Looking for DTSC 550 week 5? Week 5
Looking for DTSC 550 week 6? Week 6

For my first course, I am taking DTSC 550 Introduction to Statistical Modeling. It’s the first course on utilizing the programming language R.

โœ๐Ÿฟ Here’s a description of the course:

  • Introduction to foundational concepts, theories, and techniques of statistical analysis for data science. Students will begin with descriptive statistics and probability, and advance through multiple and logistic regression. Students will also conduct analyses in R. This course is approachable for students with little statistical background and prepares them for DTSC 650:ย Data Analytics in R

The book we are using is free and located here. I’m not saying the book is bad because I’m only one chapter in, but it reads like someone is talking. It’s a little too wordy for me. ๐Ÿ˜ด I believe a lot can be cut out. Just give me the facts and move on.


๐Ÿ’ก Learning Objectives

  • Articulate what least squares regression is
  • Calculate linear regression by hand
  • Select the best linear regression models

๐Ÿ’ช๐Ÿฟ This is what I accomplished my final (7th) week in the DTSC 550 course:

๐Ÿ“˜ Chapter 5 goes over:

  • Correlation

๐Ÿ“˜ Chapter 15 and 16 goes over:

  • Linear Regression
  • Factorial ANOVA

๐Ÿ“บ Videos watched (some videos have a 1 question quiz at the end):

  • Correlation, part 1
  • Correlation, part 2
  • Correlation, part 3
  • Regression-basics
  • Regression intro (03:19)
  • The model (08:46)
  • Causality (12:13)
  • Least squares (06:08)
  • Regression-math
  • The math (08:29)
  • Regression interpretation (02:52)
  • More R and model fit (06:40)
  • Regression with categorical predictors (07:26)
  • Multiple regression
  • R Intro Lab 5 Video Solution, Part 1 (08:29)
  • R Intro Lab 5 Video Solution, Part 2 (10:01)
  • R Intro Lab 5 Video Solution, Part 3 (11:07)
  • R Intro Lab 5 Video Solution, Part 4

๐Ÿงช Labs

  • Correlation Practice Problems where I was given 3 datasets and had to calculate the correlation between the two variables using both the covariance method and the computational method.
  • Regression Practice Problems where I was given 3 datasets and had to produce the regression equation for u predicting v and a graph of the regression equation for u predicting v using -1SD, X, and +1SD.
  • R Intro Lab 5 where I had to explore, visualize, clean, and model Texas housing data
  • CG Lab 5 where I explored the dataset, visualized variables of interest, cleaned the data, and modeled the data.

๐Ÿ’ฏ Exam

  • Module exam had 26 questions: fill in the blank, true/false, and multiple choice (some with more than one answer). You can take the exam as many times as needed to get the score you want, but each test has different questions. I took the exam 3 times. Final score was 100%. You have until the end of the semester to take all your exams.

Week 7

Want to know why I decided to pursue a Master’s in Data Science? Go here
Looking for DTSC 550 week 1? Week 1
Looking for DTSC 550 week 2? Week 2
Looking for DTSC 550 week 3? Week 3
Looking for DTSC 550 week 4? Week 4
Looking for DTSC 550 week 5? Week 5
Looking for DTSC 550 week 6? Week 6


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Elyse Y. Robinson Elyse Y. Robinson, an enterprising entrepreneur, is the mastermind behind Taxes and Services, a multifaceted holding company that doubles as her accounting firm. Her ventures encompass an array of innovative projects. One of her key initiatives is Switch Into Tech, a dynamic weekly newsletter that doubles as a platform for advertising monthly career seminars, offering weekly tech-related freebies, and promoting her latest podcast episodes of Nobody Wants To Work Tho. Additionally, Elyse shares her insights through her blog at Data.gal, where she delves into various data-related topics. Her literary contribution includes authoring Nube: Switch Into A Cloud Career, a guide for navigating cloud technology careers. Furthermore, she has established FullTuitionScholarships.org, an invaluable resource aimed at helping individuals avoid college debt. Elyse’s passions extend beyond her businesses; she is deeply enamored with Mexico, has an insatiable appetite for research, and is dedicated to assisting others in transitioning into technology careers.