Key for the Proof Pass PS2 & All The Notes from PS2


IB PS2.1 & 2.2 Understanding & Interpreting Data 11A-B (2017-18) NOTES!

IB PS2.2 & 2.3 Correlation and LOBF 11B-C (2017-18) NOTES!

IB PS2.3 & 2.4 Regressions & Chi-squared 11D & E (2017-18) NOTES!

IB PS2.4 & 2.5 Formal Test of Independence 11E.2-4 (2017-18) NOTES!

This is an old key from last year. Enjoy

IB LT5 Proof Pass Key

Geometry and Algebra E-Book and ANSWERS!

Here is a link to the book online!

Select your book at: Then use the side menu to move to the right section.

For odd answers worked out do this:

Big Ideas Math Solutions
This is a great way for students to check their work on their homework. A sample of questions from each section are worked out completely, so students can see how to work out these problems.
Online access:
1. Go to
2. Select “Common Core High School” in first pull down menu
3. Click on your book (Algebra 1, Geometry, or Algebra 2)
4. Use the pull down menus to select the chapter, section, and exercise
5. Click “View”

Tablet/Phone access: Free app
1. Go to Google Play or the App Store and search for “Big Ideas Math Solutions”
2. Download the app – it should have the icon shown at the left
3. Select your book (Algebra 1, Geometry, or Algebra 2 – Common Core High School)
4. Select the section you are working on, and then select from the list of sample exercises