Math/Stat 242:
Introductory Statistics
This is a subpage of the Math/Stat 242 Course page. If you need overall syllabus info about Math/Stat 242, click here.
This course meets in Morken 214
M, W 12:15 - 1:45 pm OR
M, W 2:00 - 3:30 pm
Student hours are
M, W, F 10:30-11:15 am;
Th 11:30-12:15pm;
& by appointment! (in person or virtual)
You can vote in the Reike Photo Contest! https://forms.gle/4NxZk8oM4LudNLWH7
Mole Day—Nov 3
New groups coming soon, according to project groups. Let me know if you have location/personnel needs to support your learning.
Today: Math class Advising Party (see flyer @ right)
Project Part 2 due Wednesday
Email NJ if you need help finding a group for the final project.
If your group <4 NJ may add people to your group.
In groups:
What is your (realistic) dream job & why?
Assign roles (TBA)
Use the ISI applet to finish Lesson 10
Discuss Lesson 10: Two-sample z tests (notes)
If time: Chance to work on Project Part 2
Thanks, Rorie, for the sampling comic (@ right)!
Mole Day—I hear it's awesome—Nov 3 (see flyer below)
If you worked in a group on Project Part 1 and received a 0 grade, please just let me know who submitted on your behalf.
New groups coming soon, according to project groups. Let me know if you have location/personnel needs to support your learning.
Project Part 2 due next Wednesday
Email NJ if you need help finding a group for the final project.
If your group <4 NJ may add people to your group.
NJ's summary of Midterm Feedback
In groups:
What is your favorite holiday, and how do you celebrate it?
Assign roles (TBA)
Finish Lesson 09
Review of prop.test() function in R.
Lesson 10: Two-sample z tests (notes)
(If time) Contagious Yawns Example
Intro/Review: Quarto files (in R)
Please take care of yourself and your community!
NJ's source of support: https://lc3.com/
I'm happy to chat about non-statistics stuff or point you to resources
Advising week: reach out to your adviser to schedule a meeting!
NJ is happy to meet with anyone interested in statistics minor, Data Science major or minor, Math major or minor, and Applied Math major.
Upper Division Math Classes Teasers: Wednesday in Morken 214 11:45-12:15. (See flyer @ right) Please come!
Complete Mid-term feedback (on G.C.)
Quiz 06 (on G.C.)
Start thinking about who you'd like to work with on the project (need at least 1 partner; NJ recommends groups of 3 or more.
Must be in your same section (so you can work together during class)
Consider availability outside of class.
Project Part II coming soon.
How do you feel about scary movies?
Review sampling methods.
Two more sampling methods
Volunteer Response (not recommended!)
Multistage (a great option!)
Lesson 09: Overview of basic tests (notes)
(If time) Lesson 10: Two-sample z tests (notes)
Submit Project Part 1. (one per group) on G.C.
Complete Mid-term feedback (on G.C.)
In groups:
Who is your favorite person right now and why?
If you were trying to pick a group of 5 "representative" trees from the image below, what 5 trees would you choose?
Discussion of HW 05
Discuss the quiz question #2 given below
Change your answer if you like!
Lesson 1X: sampling methods (notes)
Finish project part 1 and submit on Google Classroom
Some groups needed to adjust/move: seating Chart 12:15 class, 2:00 class
HW 05 due today!
Quiz Due tomorrow
Project Part 1 due Thursday
Mid-Semester Feedback Due Friday
Agenda:
How to view your grades in Google Classroom
In groups:
NJ discusses the formula for calculating a CI.
Start Project: Part 1
@ 10 min left: Comments on the Exam
Return Exams
HW 05 due Monday (in-class time today; see note above)
Coming soon: Mid-semester feedback
Agenda:
New Groups
Establish roles in groups
how to refer to you
If you could teleport anywhere right now, for 1 hour, where would you go? Why?
If you could bring one person, who would you bring and why did you choose them?
Group Processing
What are your strengths working in groups?
What are your weaknesses working in groups?
How can your group best support you/help you engage?
exchange contact information
Causal Claims vs. Claims of Association (NJ slides)
Work on HW 05 together in groups.
Agenda:
NJ's Reminder not to use cell phones / not to check cell phones/ turn them off now
Please put computers away. If during the exam you decide you would like to use R, you may log into a classroom computer at that time.
Interpret the (purpose and) meaning of a confidence interval
Calculate the confidence interval for a population proportion using a series of hypothesis tests
Navigate the relationships between sample size, the width of a confidence interval, and the confidence level
Agenda:
(If time): Discuss how to calculate a confidence interval using R
(If time): CI interval practice (link).
(If time): Discuss how to calculate a confidence interval by hand.
Take-home exam due Oct 1.
This is a hard deadline! Scores of 0 once I release scores/solutions to the class!
In-class Exam 1: Oct. 6.
In-class Exam could be tougher than the take-home.
As you study, if you want my solutions to one of the activities, please ask!
No quiz this week
Exam 1 Review is here.
You can thank Alex!
...And tentative solutions are here.
Take Home Exam (due Wednesday).
Use z-scores to assess whether an outcome is unlikely
Discern whether a question asks for a confidence interval or a hypothesis test
Agenda:
Take-home questions?
Discuss standard devation, z-scores (slides): What is a big deal?
HW 04 Due Thursday, next week!
Take Home Exam (coming soon on G.C.)
Expected release tomorrow.
Let NJ know if Oct 6 is a conflict for Exam 1
Agenda:
In Groups:
Your name and how to refer to you
If you had to give a TED talk right now (wiht no preparation), what would it be about?
Discuss questions on the quiz
12:30 class: functions, arguments in R (slides: 02 Script Files & basics)
Lesson 05 (notes)
Homework Questions.
Quiz (open today at 3pm, due tomorrow)
HW 04 tentatively Due Thursday, bring questions to class on Wednesday!
Let NJ know if Oct 6 is a conflict for the in-class exam.
Agenda:
New Groups:
Your name and how to refer to you
Choose your favorite:
In groups: Summarize what we've done so far in Lesson 04
Finish Lesson 4 (notes)
Intro to R (slides: 01 Intro, 02 Script Files & basics)
Lesson 05 (notes) - you need some of this for HW 04
We will use R on Monday
HW 3 Due Thursday
Email NJ if you have requests regarding groups
Download R/ R Studio
Discern when the research question calls for a one versus a two-tailed test
Calculate the p-value for a 2-tailed test
Agenda:
Quiz discussion
HW questions
P-value practice
More p-value practice: (link)
Lesson 4 (notes)
We will likely start using R next week. (Downloading it is on your to do list)
Classroom computers have R/R-Studio if needed.
Quiz 03 is on GC (due tomorrow)
HW 03 is on GC (due Thursday).
Take a look and bring your questions to class on Wednesday!
Email NJ by 7pm Sunday if you have requests for seating for the next groups!
Proximity to window or door
Position relative to the screen
Personnel to avoid to support your learning (I don't need details)
Due Soon (next week?)
Read Modern Dive first few sections of Chapter 1 (Stop when it says: 1.2 How do I code in R?)
Download (or update) R on your computer
Download (or update) R-Studio on your computer
Apply statistical tests in ways that can make social change
Set up hypothesis test NOT with 50-50 model
Calculate a p-value and use it to conclude about a statistical question.
Agenda:
Seating Chart 12:15 class, 2:00 class
Reike photo contest (see flyer @ right)
Coffee Donuts Fruit (free!) in ERB on September 15 11:45am-12:15pm
NJ is the "Director of Data Science" at PLU. Come see me if you are interested in:
Minor in statistics
Minor in Data Science
Major in Data Science
Major in Applied Math
Major in (Pure) Math
HW due Friday @ 3pm
Agenda:
In Groups:
Share/remind us how we should refer to you
What is your "theme song" for today?
Quiz from Tuesday: check in with group about any questions you had.
Parameter vs. Statistic practice (link)
Finish Lesson 02 - Lesson notes
Homework 02 questions
If time: Start Lesson 03: A Discrimination case (notes)
Seating Chart 12:15 class, 2:00 class
Please let me know if I refer to you incorrectly
12:15 pm class: do you want a smaller class size? Join the 2:00pm class!!!
ERB (Math Center) is across from NJ's office & open to all students taking math!
Naufal's contact info:
Let me know if you want to use electronic copies of the notes
Email NJ food allergies
We may adjust the due date of HW to Thursday @ 3pm.
Quiz 2 open @8am Monday, due Tuesday 3pm
Check out HW2 and bring questions to class on Wednesday!
HW 2 open @8am on Monday, due Friday @ 3pm
Agenda:
Group Formation/Processing:
Share/remind us how we should refer to you
Share about your favorite pet & why you liked it. (If no pets? Share your Favorite family member or friend)
Syllabus Quiz
12:15pm class: complete Syllabus Quiz
2:00pm class: double check answers b/c there are some incorrect ones!
More intro to hypothesis testing: Buzz and Doris.
01 -Lesson Notes.
If time: formalizing the process
02 - Lesson notes
If time: Hypothesis Testing Practice (link)
Seating Chart 12:15 class, 2:00 class
Welcome! I am Dr. Justice!
Important websites:
How to reach the syllabus
How to reach this Weekly Content Page
Best way to reach NJ is via email
If you have a question about coursework be sure to include the question prompt in the email.
Student (Office) Hours:
M, W, F 10:30-11:15am
Th 11:30 am-12:15 pm;
& by appointment! (in person or virtual)
Intro Naufal: naufal.alavi@plu.edu
Due by Thursday (7:30pm):
Join Google Classroom
Information Sheet (on G.C.) (~10 min)
Read Syllabus
Syllabus Quiz (on G.C.) (~10 min) - postponed to Monday for the 12:15 class.
HW 01 due Friday at 3pm (link available soon). Submit as PDF to Google Classroom
(Rossman, Chance, Medina article is here)
Due Soon (next week?)
Read Modern Dive first few sections of Chapter 1 (Stop when it says: 1.2 How do I code in R?)
Download (or update) R on your computer
Download (or update) R-Studio on your computer
In Class:
Syllabus Topic: Late work policy
Intro to the Course (slides intentionally not included).
(5 min break)
Intro to Dophins Activity
01 -Lesson Notes.
How to reach Google Classroom (GC)
Syllabus Quiz (in groups) available on GC