Difference between revisions of "Lectures: Stat 202 Summer 2016"

Revision as of 20:42, 1 August 2016

Some lectures below reference my class notes. Here is a link to a recent version of the entire class notes document: The Data Professor's Guide to Basic Statistics. Following the same link in the future may bring you to a more recent version. The link will be as recent as I bother to update it.

Monday, June 27, 2016

• Review assignment: Please review the material presented in class. We covered three and a half chapters (items 6-83, pages 13-27) in The Data Professor's Guide to Basic Statistics. These chapter's were Defining familiar terms, Let's collect some data!, Concepts of structured data, and part of Kinds of variables (up to item 83).

• Reading: the rest of Kinds of variables (items 84-100, pages 27-29) in The Data Professor's Guide to Basic Statistics.

• Reading: Moore, McCabe & Craig, pages 1-3.

• Homework: problems 1.14 and 1.16 on Homework 1. Due date will be assigned later (a week in advance). Update: due July 6, 2016.

• Optional reading: front matter to The Data Professor's Guide to Basic Statistics, pages 1-12. Many of these pages are blank, or mostly blank.

Tuesday, June 28, 2016

• Review: Please review the new material presented in class. In The Data Professor's Guide to Basic Statistics, Day 2, we covered the remaining part of Kinds of variables, and two new chapters: Distributions, and Exploratory data analysis, to page 34 and item 134.

• Homework: Homework 2 (stem plots). Please review, if finished. Due July 5, 2016, at end of class.

• Reading: Moore, McCabe & Craig, Section 1.2, pages 9-25.

Wednesday, June 29, 2016

• Review: Please review the new material presented in class. You will find the first 10 pages of My Summer 2015 Lecture Notes, Week 1, Tuesday helpful, as those were the notes I used to make today's presentation to the class.

• Homework: Homework 1 (cases, variables, pie charts, bar graphs) is now officially assigned. Due July 6, 2016, at end of class.

• Homework: Homework 3 (histograms) is also assigned. Due July 6, 2016, at end of class.

• Reading: Moore, McCabe & Craig: No new reading from the text today, but please finish reading material from Monday and Tuesday.

• Optional reading: Chapter 5 of Exploratory Data Analysis with R, by Roger D. Peng. This text is available from the publisher at http://www.leanpub.com/ The publisher asks for a donation. If you select $0.00 for your donation, you get the text for free.

Thursday, June 30, 2016

• Review: Please review the new material presented in class. You will find pages 11-19 of My Summer 2015 Lecture Notes, Week 1, Tuesday and all of Week 1, Wednesday helpful.

• Homework: Homework 4 (box plots and transformations) is assigned. Due July 7, 2016, at end of class.

• Homework: We worked on the first two problems of Homework 5 (more box plots and transformations and other things) but this homework doesn't have a due date, yet. Update: due July 12, 2016.

• Reading: Moore, McCabe & Craig: Pages 33-41.

Monday, July 4, 2016

• No class: Independence Day!

Tuesday, July 5, 2016

• Review: Please review the new material presented in class. We covered a new chapter (items 135-200, pages 35-40) in The Data Professor's Guide to Basic Statistics. We also covered My Summer 2015 Lecture Notes, Week 1, Thursday.

• Homework: Homework 5 (more box plots and transformations density curves), due Tuesday July 12, 2016.

• Homework: Homework 6, I passed this homework out but no due date is assigned yet. Update: due July 13, 2016.

• Reading: Moore, McCabe & Craig: Pages 42-67.

Wednesday, July 6, 2016

• Review: Please review the new material presented in class. We covered pages 1-6 of My Summer 2015 Lecture Notes Week 2, Monday.

• Homework: Homework 7 (Normal distributions), due Tuesday July 13, 2016.

• Homework: Homework 8 (QQ-Plots), due Wednesday, July 13, 2016.

• Reading: Moore, McCabe & Craig: Pages 67-72.

Thursday, July 7, 2016

• Review: Please review the new material presented in class. We covered pages 9-17 of My Summer 2015 Lecture Notes Week 2, Monday and pages of 1-7 My Summer 2015 Lecture Notes Week 2, Wednesday.

• Homework: Homework 9 (Probability Models), due Thursday July 14, 2016.

• Homework: Homework 10 (More Probability Models), passed out but no due date assigned yet. Update: due July 18, 2016.

• Reading: Moore, McCabe & Craig: Pages 231-249.

Monday, July 11, 2016

• Review: Please review the new material presented in class. We covered page 8 of My Summer 2015 Lecture Notes Week 2, Wednesday and all of My Summer 2015 Lecture Notes Week 2, Thursday.

• Homework: Homework 10 (Binomial Random Variables & More Probability Models), due July 18, 2016.

• Reading: Moore, McCabe & Craig: Pages 252-261.

Tuesday, July 12, 2016

• Review: Please review the new material presented in class. We covered the parts of My Summer 2015 Lecture Notes Week 4, Wednesday and My Summer 2015 Lecture Notes Week 4, Thursday about the means of random variables and started with the standard deviation and variance of random variables.

• Homework: We skipped ahead on homework: Homework 17 (Means of Random Variables), Due August 2, 2016.

• Reading: Moore, McCabe & Craig: Pages 263-274.

Wednesday, July 13, 2016

• Today we worked a practice exam for the midterm.

• Remember: Our exam tomorrow is in Anderson B-11 between 10 AM and Noon.

Thursday, July 14, 2016

• Midterm Exam.

Monday, July 18, 2016

• Review: Please review the new material presented in class. We covered Pages 3 to the end of My Summer 2015 Lecture Notes Week 3, Monday and all of My Summer 2015 Lecture Notes Week 3, Tuesday, concerning correlation and regression.

• Handout: Correlation and Regression.

• Homework: Homework 11 (Correlation). Due July 25, 2015.

• Extra Credit Assignment: Due Wednesday, July 20. Worth 10 points added to your homework score. You must be present in class on Wednesday, July 20 to get the points, and you must both participate in the discussion in class and turn in (on Wednesday) a short written paragraph describing your experience. Here is the assignment: Pick a topic, suggestions are below. See what data you can find on the web concerning this topic. Use Google, and start with the key words "data" and your topic. Are the data you find free or do they cost money? Can you download the data set or do you need a computer program (or hand copy) to pull them off the web? If you can download the data, can you load it into StatCrunch or do the data require "munging" to be used by StatCrunch? What are the cases, and what are variables? (If there are many variables, what are some of the ones that are of interest to you?) Spend at least 45 minutes on this assignment. If you finish with your first topic in less than 45 minutes, try another topic. Suggested topics (actually, whatever interests you): sports (of various kinds, there are lots of free good data on baseball), entertainment, movies (again good data), law, criminology, government, city planning, architecture, weather, climate, geology, seismology, medicine, epidemiology, health, fitness, biology, evolution, extinction, ecology, math, computer science, statistics, data science, anthropology, ethnic studies, gender studies, history, sociology, culture, tourism, archeology, art, literature, writing, journalism, census, linguistics, finance, economics, business, astronomy, physics, chemistry, library sciences, theology, anything else you can think of.

• Reading: Moore, McCabe & Craig: Pages 81-107.

Tuesday, July 19, 2016

• Review: The new material today concerns (1) sampling and (2) counting the number of samples of a certain size possible given the size of the population. The notes for this are in the most recent version of The Data Professor's Guide to Basic Statistics, pages 37-45.

• Homework: Homework 12 (Regression). Due July 26, 2016.

• Homework: Do the two problems on page 44 of The Data Professor's Guide to Basic Statistics. While required, this homework will not be collected. Answers are on page 45.

• Reading: No reading from Moore, McCabe & Craig today. Please read the material from the Data Professor's Guide linked to above, and complete the homework.

• Extra Credit Assignment: Due tomorrow for class discussion. See July 18, above.

Wednesday, July 20, 2016

• Review: We started to talk about inference today by examining a student project on the Philadelphia Eagles, team ranking and Quarterback salary. There are no materials to review here but we will discuss this more soon.

• Review: Chapter 3. I sent the PowerPoint I used in class as an attachment to an email on Wednesday, July 20, 2016.

• Homework: No new homework today.

• Reading: Moore, McCabe & Craig, pages 168-174.

• Extra Credit Assignment: Deadline extended until class time, tomorrow. We plan to continue our discussion, in class.

Thursday, July 21, 2016

• Review: We continued our introduction to inference with a second example. Yesterday's example was a student project on the Philadelphia Eagles, team ranking and Quarterback salary. Today's new example was clustering trees in an old growth forest. You can read about this new example on page 352 of the textbook (Example 6.1).

• Review: I presented a PowerPoint on section 2.2, 2.5, 2.7 of our textbook: Specifically, 2.2 (Scatterplots), 2.5 (Cautions about Correlations and Regression) and 2.7 (The Question of Causation) of the book. The PowerPoint is attached to an email sent July 21, 2016.

• Homework: No new homework today.

• Reading: Moore, McCabe & Craig, page 352, and sections 2.2, 2.5, and 2.7.

Monday, July 25, 2016

• Review: We continued our introduction to inference with a third example: testing the null hypothesis that two proportions are equal, the proportion of patients that get better with a new drug under development versus the proportion of people who get better with a placebo. You can read about this example on pages 352-353 (Example 6.2).

• Review: I completed the PowerPoint on chapter 3 that I started last Wednesday. The PowerPoint was attached to an email sent July 20.

• Homework: Homework 13 (Issues with Correlation and Regression). Due August 1, 2016.

• Homework: Homework 14 (Producing Data I). Due August 1, 2016.

• Homework: Homework 15 (Producing Data II). Due August 2, 2016.

• Homework: Homework 16 (Producing Data III). Due August 3, 2016. (August 3 is last day of class before final.)

• Homework: Homework 17 (Means of Random Variables), Was assigned July 12, 2016; now due August 3, 2016. (August 3 is the last day of class before final.)

• Reading: Moore, McCabe & Craig, we covered pages 175-228 today. Please look over this material.

Tuesday, July 26, 2016

• Review: We continued our study of tests of significance and started with confidence intervals.

• Handout with Sample Problems: Confidence Intervals & Hypothesis Testing with Sample Problems.

• Handout on Confidence Intervals.

• Homework: There are no homework sets assigned today. Four were assigned yesterday and a due date was specified for a fifth that was already assigned. Please work on those.

• Reading: Moore, McCabe & Craig, pages 351-390.

Wednesday, July 27, 2016

• Homework: We spent most of the day's class working on Homework 18 (Sampling Distributions for the Mean). Due August 3, 2016.

• Handout: A brief lecture during this day's class concerned a handout about T Statistics.

• Reading: Moore, McCabe & Craig, pages 301-316: Sampling Distributions.

• Reading: Moore, McCabe & Craig, pages 417-441: T Statistics.

Thursday, July 28, 2016

• Handout: We reviewed Sampling Distributions for the Mean with a new handout. The material on this handout covered the ground for Homework 18 (Sampling Distributions for the Mean) that we worked on in class on Wednesday, July 27.

• Handout: We continued with Sampling Distributions for Counts and Proportions, with another new handout.

• Homework: We worked on Homework 19 (Sampling Distributions for Counts and Proportions), covering the ground for the second new handout of the day. Due Homework 19 is August 4, 2016.

• We covered the difference between Paired and Two-Sample T-Tests with a class exercise.

• Reading: Moore, McCabe & Craig, pages 320-339: Sampling Distributions for Counts and Proportions

• Reading: Moore, McCabe & Craig, pages 429-432: Paired T-Tests.

• Reading: Moore, McCabe & Craig, pages 447-467: Two-Sample T-Tests.

Monday, August 1, 2016

• After reviewing material from the previous class, we passed out the last four homework sets, and I gave a lecture on Statistical Power and Type I and Type II errors (needed for Homework 23).

• Homework assigned last week. Now, a due date is given: Homework 19 (Sampling Distributions for Counts and Proportions), now due August 4, 2016.

• Homework assigned: Homework 20 (Test of Significance). Due August 4, 2016.

• Homework assigned: Homework 21 (Confidence Intervals). Due August 4, 2016.

• Homework assigned: Homework 22 (Use and Abuse of Tests). Due August 4, 2016.

• Handout: Power and Type I & II Errors.

• Homework assigned: Homework 23 (Power and Type I & Type II Errors). Due August 4, 2016.

• As a follow up to the discussion on Type I and Type II Errors, please see my discussion on Specificity and Sensitivity.

• All homework has been assigned. There will be no opportunity to turn in work after the final on August 4th.