Math 143 C/E
Probability and Statistics
Spring, 2001

Lecture links

• Class page
  What is statistics?
• Case Studies
  • A day at a Boston-area welfare office
  • Day care
  • Performance in school: boys vs. girls

• The Seven Critical Components that determine the soundness of a statistical study
• Evaluating studies
• Examples:
  • Who is smarter: psychology or chemistry majors?
  • Women's choice of husbands

• The Seven Critical Components that determine the soundness of a statistical study
• Practice with the 7 critical components: Drug to cure excessive barking article
• Reading discussion questions
  • for Section 1.1: some possible answers
  • for Section 3.2: some possible answers
• Effects of changing histogram bin sizes

Wednesday, 02/07/2001: Senators activity

Friday, 02/09/2001

• From histogram, estimate mean and s.d.
• From histogram, estimate boxplot
• Illustration of how mean and median respond to added data points

• A gallery of distributions | Applets to display your own distributions
• Reading discussion questions for Section 1.3: some possible answers

Thursday, 02/15/2001

• The vocabulary of inferential statistics
• Sampling distributions demo
• Reese's Pieces applet
• Reading discussion questions for Section 3.4: some possible answers

• Probability definitions (powerpoint slides): Slides 3, 4, 5
• Some rules of probability (powerpoint slides)
• Reading discussion questions for Section 4.1: some possible answers

Wednesday, 02/21/2001

• Warm-up exercises
• False positives on medical tests
• Position of the ACLU on drug-testing in the workplace (claim of at least 10% false positives)
• A drug-test awareness site, clearly for those who want to conceal drug use
• Reading discussion questions for Section 4.3: some possible answers

Friday, 02/23/2001

• Warm-up exercises
• Applet illustrating the law of large numbers

• Sampling distributions demo
• Reading discussion questions for Section 5.1 and some possible answers

• Compare areas for binomial and normal distributions
• Reese's Pieces applet

• Compare areas for binomial and normal distributions
• Reese's Pieces applet
• Sampling distributions demo
• ER response times
• Reading discussion questions for Section 5.2 and some possible answers

Friday, 03/09/2001

• Warmup: Mean life of radial tires
• Confidence interval applet
• Sampling distributions for proportions
• Confidence intervals for proportions: Bottling company
• Reading discussion questions for Section 8.1 (part 1) and some possible answers

• Warmup: Overseas calls
• Increasing df makes the t distribution become more normal
• Compare areas under t and normal distributions
• Radial tires revisited
• Reading discussion questions for Section 7.1 (part 1) and some possible answers

• Some examples for significance tests
• Reading discussion questions for Section 6.2 and some possible answers

• Some examples for significance tests
• Reading discussion questions for Section 7.1 (Part 2) and some possible answers

• Some examples for significance tests
• Reading discussion questions for Section 8.1 (Part 2) and some possible answers

• Warmup: alkalkine batteries
• Reading discussion questions for Section 6.3 and some possible answers

• Some examples of two-sample inference procedures on means
• Reading discussion questions for Section 7.2 and some possible answers

• Summary of information on inference procedures
• Inference on a two-sample proportion problem
• Reading discussion questions for Section 8.2 and some possible answers

• A graph of a marginal distribution from the textbook: Figure 2.38
• Some graphs of conditional distributions from the textbook: Figure 9.2
• Reading discussion questions for Section 2.6 and some possible answers

• The chi-square distributions
• Conditional distributions for Example 9.8 (in text): Figure 9.4
• An example of Simpson's Paradox: UC-Berkeley graduate admittance lawsuit
• Reading discussion questions for Section 9.1 and some possible answers

• From the textbook, figure 2.1 for Verbal SAT vs. pct. of students
• Figure 2.2: Verbal SAT vs. pct. of students fine detail
• Reading discussion questions for Section 9.2 and some possible answers

• Lack of resistance of correlation and regression line
• The correlation guessing game
• Reading discussion questions for Section 2.1 and some possible answers

Monday, 04/16/2001

• Heights of children in Kalama, Egypt: just the scatterplot | scatterplot with fitted line
• Freshman enrollment and introductory math courses: scatterplot | residual plot | time plot of residuals
• Children and their 1st word: scatterplot | residual plot | fitted line w/out Child 18
• Reading discussion questions for Section 2.3 and some possible answers

• Figure 10.2: subpopulations in regression
• Reading discussion questions for Section 2.4 and some possible answers

• Reading Reports
• Blood types among Hawaiian ethnic groups
• Weight gain during 3rd trimester of pregnancy, various countries
• Reading discussion questions for Section 2.7 and some possible answers

Monday, 04/30/2001: A summary of techniques we've learned and situations in which they can be used

Friday, 05/04/2001

• The Scoring rubrik for reading reports
• The top ten lessons of Math 143

• See the Binomial distribuion B(n, p) for various values of n and p
• Compare areas for binomial and normal distributions
• Bernoulli trial applets
• Powerpoint presentation on Bernoulli trials
• The Student t distribution
• There are many normal curves
• Sampling distributions for proportions
• Confidence Interval simulator
• Another confidence interval applet
• The chi-square distribution
• A probability calculator for various distributions
• An interactive significance test applet
• Another applet showing sampling distribution