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**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 6? Week 6**

**Looking for DTSC 550 week 7? Week 7**

๐ก Learning Objectives

- Describe the difference between samples and populations and how they are connected
- Describe why sampling distributions are useful and connected to estimating a population
- Describe the Central Limit Theorem and its importance
- Calculate and define standard error and confidence intervals
- Describe why standard error is needed even though we have standard deviation
- Articulate how hypothesis testing works, and its limitations
- Describe significance testing, and its limitations
- Describe how effect size, sample size, alpha, and power work together

๐ช๐ฟ This is what I accomplished my fifth week in the DTSC 550 course:

๐ Chapter 10 goes over:

- Estimating Unknown Quantities from a Sample

๐ Chapter 11 goes over:

- Hypothesis Testing

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

- Hypothesis Testing Part 1: Sampling
- Hypothesis Testing Part 2: Hypotheses
- Data Collection Principles
- 0.05
- TestStatistics
- Effect Size and Power
- Type I and II Errors
- Standard Error
- Confidence Intervals
- One and Two-Tailed Tests

๐ Read these articles:

- Statistical tests, P values, confidence intervals, and power: a guide to misinterpretations
- A practical solution to the pervasive problems of p values

๐ฏ Exam

- Module exam had 26 questions: fill in the blank, true/false, and multiple choice with one answer. It was heavy on true/false which was nice. This test looked easy but was difficult even with the true/false questions. Tricky wording! No calculations using R in R Studio.
- 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 7 times: 53.7, 66.67, 62.96, 75.93, 87.04, 94.44. Final score was 100%. No questions missed! Iโm done with that!
- You have until the end of the semester to take all your exams.

๐ฅ Summary

- Chapter 10 is missing images so hindered there. The chapter is relatively short and easy to digest. The book is easy to read but it has so many typos itโs ridiculous.
- So far my grade in the course is 88.72% which equals a B+ or 3.3 GPA. I want a 3.7 GPA (A-) at least for my first course so Iโll see how my final two exams go.
- I have to play catch up this weekend because I took a week off for vacation.

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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. Elyseโs 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.