Posts in December, 2010
Unit 2-3; Chapter 9-12
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Thursday December 23, 2010

Complete yesterday's homework - umm...10 people actually did it.
Experimental Design Videos
MythBusters
Dog's Head out a Car Window

TED Talks
Ken Robinson: Schools Kill Creativity, Bring on the Learning
Malcolm Gladwell: Spaghetti Sauce
Conrad Wolfram: Teaching Kids Real Math with Computers
Most Popular TED talks

A Reflection - if you'd like, write a reflection in Google Docs and share it with Mr. C
1. Some questions are listed below to guide you. Write whatever you want that is reflective of your learning experience up to this point in AP Stat. DO NOT just answer the questions below in a Google doc
  • What do you like about class so far this year?
  • What don't you like about class so far this year?
  • What would you like to do more of?
  • What would you like to do less of?
  • How much effort are you putting into learning?
  • What would help you to learn better?


Wednesday December 22, 2010

Rolling Down the River
Part II - The field has been irrigated


Tuesday December 21, 2010

Skill 12.1: Know the basic concepts and terminology of sampling
Skill 12.4: Report possible sources of bias in sampling methods. Recognize voluntary response and nonresponse as sources of bias in a sample survey
List of types of bias and their definitions
Design a biased survey
  • Think of a question/questions you want to investigate
    • What's the population you'll be sampling from?
    • What do you want to know about a population (parameter you're trying to investigate)
      • Proportion or average?






  • How would you conduct a survey that is biased in the following ways?
    • Nonresponse
    • Voluntary Response
    • Undercoverage
    • Response bias









Monday December 20, 2010

Skill 12.1 Know the basic concepts and terminology of sampling
Skill 12.2. Understand the value of sampling to estimate population parameters from statistics calculated on representative samples drawn from the population
Skill 12.4: Report possible sources of bias in sampling methods. Recognize voluntary response and nonresponse as sources of bias in a sample survey
Sampling Variability - count the number of g's in a story
  • <Form>
Surveying


Friday December 17, 2010

Reassessment
  • You may use your formula sheet
Non-reassessors
1. Conduct a simulation - Complete 10 trials for each simulation and record an average/proportion for all trials
  • 42% of drivers pass their driver's test on their first attempt. If they fail the first attempt, they have a 72% chance of passing on each additional attempt. Design and conduct a simulation for the number of attempts that can be expected to pass a driver's test.
  • Design and conduct a simulation to determine the number of hearts that can be expected in a 5 card poker hand
  • 30% of nests in a chicken coop have 4 eggs, 45% have 3 eggs, and the rest have 2 eggs. Design and conduct a simulation to determine the number of nests you can expect to check to get one dozen eggs
  • Conduct a simulation of your own design
2. Finish your toaster regression project and share it with me on Google Docs
3. Organize Unit I and Unit II skills pages on the wiki
4. Create a histogram & boxplot for the data from the Random Rectangles Activity (Average Areas Obtained For Each Method)
  • Upload Fathom files to the Wiki





here is a better fathom file of the rectangle, so look at this one ^ not the other one haha



Thursday December 16, 2010

Random Rectangles
Complete the Reassessment Form if you plan on re-assessing tomorrow


Wednesday December 15, 2010

Conduct the simulation for the random phenomena you thought of for HW last night using a random number table
  • How to use a random number table
  • Post a description of how you would conduct the simulation in the discussion forum of this page
  • Share some ideas you have
  • Ideas needed?
    • How many rolls of a fair die can you expect to get doubles? Triples?
    • What's the longest streak of Heads/Tails you would expect to see?
    • An X% free-throw shooter would be expected to make how many in 10 attempts?



Tuesday December 14, 2010

Think about this...if you flipped a fair coin 5,100, 1000 times, how many heads would you get?
  • If this process of 100 flips were repeated, what would we expect?
After thinking, enter your guesses: Flipping a Coin
Conduct the actual simulation using your Random Number Table
# of Heads Actually Gotten

Homework
Think of a situation that can be simulated using a random number table

Monday December 13, 2010

Unit II Test Discussions
Homework
Think about this...if you flipped a fair coin 100 times, how many heads would you get?
  • If this process of 100 flips were repeated, what would we expect?


Friday December 10, 2010

Collect your sample according to the method you developed yesterday
  • Post your sample (as just teacher's last names) in the discussion forum of the home page
Teachers that were sampled, largest names appeared the most frequently in our samples




Thursday December 9, 2010

Skill 11.1. Conduct a simulation to simulate random outcomes for a real-world situation
Objectives
1. Be able to recognize random outcomes in a real-world situation
2. Be able to recognize when a simulation might usefully model random behavior in the real world
Lesson
1. Do Teachers Have Tattoos?
  • What % of teachers at North Penn High School have tattoos?
  • How would you determine this percentage? (Groups of 3)
    • Census
    • Samples - come up with a way to determine just how you would sample from both HS and the entire district
      • Figure out a way to get a representative sample of teachers
        • Then conduct your sample
        • Suggestions/illustrate strategy on the board
  • Look at the results of your sample, is your sampling method "fair"?
  • Random Number Table and Random Sampling Techniques
  • Question now becomes what percentage of students at North Penn have tattoos?
    • How about teachers in the North Penn School District?

2. Begin to think about what you want to investigate about the North Penn Community



Wednesday December 8, 2010


Substitute Teacher
  • Work on Unit II Test
    • Complete by Monday, December 13th



Tuesday December 7, 2010

Chapter 10-
Make it Linear! (re-expressing data in order to make it more linear)
Is this allowed? (Correlation Formula)
-Hey guys this is Fenix1010 again, I been noticing a 1 or 2 more people editing the page recently which is great, but lets make this a class effort and get more people on it. Thanks for the help guys.




Monday December 6, 2010

Please use your extended period today (early dissmissal) to put the finishing touches on your Toaster Regression Projects
-Be sure to share them with Mr. C on Google Docs



Friday December 3, 2010


Reassessment for those that completed the form
Everyone else:
-Share on Google Docs by Monday December 6th
  • Work on wikispace organization, skill pages etc.


Thursday December 2, 2010


Work on Toaster Regression Project
-Share on Google Docs by Monday December 6th


Wednesday December 1, 2010


Toaster Regression Project (due by Monday 12/6/2010, shared with Mr. C on Google Docs)
Skill 9.1. Understand appropriate cautions to take when fitting a regression
Inflation Data
  • Scatterplot of inflation rates over the years
  • Would be better to look at and report subgroups
Loose Ends
1. Causation - NAEP
2. Interpretation of r-squared
  • % variation explained by the model, the rest is due to other factors
3. Extrapolation - Beer and BAC - __Blood Alcohol Content__ (__Chart__)
4. Interpretation of a Regression Output
Skill 9.3 Identify and discuss possible lurking variables
Confounding vs Lurking Variables (BMI vs Height)
http://www.youtube.com/watch?v=NUHSUA2v0O0



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