Cara Lee's Math Resources Portland Community College
  • Home
  • MATH 20
  • Math 60
  • Math 105
  • MATH 111
  • Math 243
  • Schedule
  • Meditations
  • Workshops
  • Math 60 Lec/Lab Version

Math 243 - Statistics I​

Winter Term 2023 - I have an online class and now all of the materials can be found in D2L. You can use this site to get a feel for my teaching style.

We will be using a free online book and a free online homework system called MyOpenMath and free software called GeoGebra.


Waitlist Info:

Intro videos

MyOpenMath Walkthrough

Notes packet
​
Module 1 videos
Module 1 Playlist

Module 2 videos
Module 2 Playlist
​If you are registered in my class or on the waitlist, please check your MyPCC email for information.

Older materials:

Syllabus, Spring 2019 T/Th 9am
Syllabus, Spring 2019 T/Th 2pm
Accessible Word Version (2pm class)
Daily Class Agenda (This will be updated as we go through the term. Check here if you miss a day.)


Free Technology Needed: GeoGebra Classic 
​

​Chapter

​Resources

​Old Class Notes
Materials are now in D2L. Feel free to use these as an extra resource.


Chapter 1
Intro to Stats and Categorical Variables

  • ​Why Study Statistics?​
  • Against All Odds Intro to Stats​
  • Categorical and Quantitative Variables​
  • Sampling Methods
​
Blank packets are posted in this column with solutions in case you miss a class or want to check my version of the notes.

​1.1-1.2 Intro to Stats and Types of Variables
1.1-1.2 Blank Packet

1.3-1.5 Data Collection
​1.3-1.5 Blank Packet

Chapter 2
Descriptive Statistics

Part 1: Shape, center and spread, and unusual features, 5-number summaries and boxplots.
  • ​​Stem-and-leaf Plot by My Secret Math Tutor
​
Part 2
: Standard deviation, relating histograms to boxplots, and comparing distributions
  • Introduction to Standard Deviation and Calculation (We will calculate one by hand in class because it is important to know where it comes from and then we'll use technology)
Videos by Cara:
  • Example 2 Video Solution 
  • Example 3 Video Solution
  • Activity 1 Video
    • Relating histograms to boxplots applet
  • Example 4 Video
  • Example 5 Video​
​2.1.2-2.2.5 Descriptive Statistics Part 1 
2.1.2-2.2.5 Blank Packet
​
Warmup Practice Problem Solution
​

2.2.2, 2.2.7 Descriptive Statistics Part 2 - Standard Deviation and Symmetric Distributions (See videos to the left or above on a small-screen) 
2.2.2, 2.2.7 Blank Packet

Section 3.1
Probability

Sections 3.2 & 2.3
Categorical Data and Contingency Tables
  • Law of Large Numbers
3.1 Intro to Probability Lab
​3.1 Blank Packet

​3.2&2.3 Categorical Data and Contingency Tables
3.2-3.3 Blank Packet

Midterm 1
​Chapters 1-3.1

See sample problems and solutions in D2L

Section 3.5
Discrete Random Variables
Videos by Cara:
  • Intro to random variables
  • Calculating expected value
  • Calculating standard deviation
  • Another example
3.5 Discrete Random Variables
3.5 Blank Packet

Section 4.4
Binomial Distribution
4.4 Binomial Distribution with 3a corrected
​4.4 Blank Packet

Section 4.1
The Normal Distribution
4.1 The Normal Distribution
4.1 Blank Packet​

Section 4.2
The Central Limit Theorem and 
Sampling Distributions for Means
  • Understanding Statistical Inference
  • Sampling Model for Means Applet​
  • Sampling Model for Means (How to use the applet)​
Videos by Cara
  • Sampling Distribution of Means Experiment
  • Sampling Distribution of Means Simulation (using applet above)
  • Sampling Distribution of Means Summary
  • Properties of the Distribution of Means
  • Properties of the Distribution of Means Part 2
4.2 Sampling Distributions for Means (Page 8 corrected)
4.2 Blank Packet



Midterm 2
​3.2, 3.5, 4.4, 4.1, 4.2

Section 4.5
Sampling Distributions for Proportions
  • Sampling Model for Proportions Applet
Videos by Cara:
  • Sampling Distribution of Proportions Experiment
  • Sampling Distribution of Proportions Simulation (using applet above)
  • Sampling Distribution of Proportions Summary
  • Properties of the Distribution of Proportions
  • Properties of the Distribution of Proportions Part 2
4.5 Sampling Distributions for Proportions
​4.5 Blank Packet

Sections 5.1-5.2, 6.1
Confidence Intervals - Statistical Inference!
Videos by Cara:
  • Introduction to Confidence Intervals
    • Link to Poll on Healthcare, 2018
  • Confidence Interval Formula
  • Critical Z-Values
  • Standard Error and Conditions
  • Margin of Error and Interpretation
  • Why Confidence? and Interpretation
  • Calculating Confidence Intervals
  • Finding Sample Size for a Margin of Error

Other Videos:
  • Understanding Confidence Intervals Video
  • Introduction to Confidence Intervals Video
Why the 2016 election polls got it wrong
  • Pew Research Center Video
  • ABC News Video
  • American Association of Public Opinion Research (AAPOR) Articles​
5.1, 5.2, 6.1 Confidence Intervals
Blank Packet

Sections 5.3-5.4, 6.1
Hypothesis Testing
  • Applied Psychology Journal Bans p-values
  • P-hacking
  • A Guide to the P-Value Controversy 
Overview of Sampling Distributions and Inference

5.3, 5.4, 6.1 Hypothesis Testing 
Blank Packet

​8.1-8.2.6 and 2.11
Linear Regression
  • Correlation Matching Applet
  • Spurious Correlations Website
8.1-8.2.6 Packet (2 days)
Blank Packet
​
In-Class Review Problems
​Solutions

Final Exam - Cumulative
About half or a little more on material after the 2nd midterm
The rest on the main concepts from the midterms
Check D2L for sample problems and solutions

Good Sources for More Videos:
Anywhere Math on YouTube
Statistics Learning Centre
​Against All Odds Video Series
My Secret Math Tutor
  • Home
  • MATH 20
  • Math 60
  • Math 105
  • MATH 111
  • Math 243
  • Schedule
  • Meditations
  • Workshops
  • Math 60 Lec/Lab Version