## Applebees vs. Starbucks “OR”

There are times in statistics when we have to fight the English language because we need a more specific and precise definition of the English word (bias, plausible, significant). “OR” is a classic example. Applebees “OR” You decide to go

## Best Friends Forever: Two-Way Tables and Venn Diagrams

Two-Way Table Two-way tables provide a clear and concise method for organizing probabilities for two events. I have discovered that students develop deeper understanding of two-way tables if I have them create one from a scenario, rather than putting a

## Tell the Whole Story: Evidence for Ha. By Josh Tabor

Today we have Josh Tabor as our guest blogger.  Josh is a high school statistics teacher at Canyon del Oro high school in Arizona.  He also the co-author of Statistical Reasoning in Sports, Statistics and Probability with Applications (SPA), and The Practice

## Correlation Does Not Mean Causation

taken from Spurious Correlations by Tyler Vigen The most important lesson of the school year If I could gift my students with only one single concept that they could take from my class and bring into the real world, it

## Why Bother with z-scores and Table A?

We use z-scores and Table A to help us find area under normal distributions (P-value) so that we can make a conclusion to a significance test. But calculators and technology can do all this work for us.  Tables of values are archaic.

## Interpret the z-score (Like it’s Your Job)

Most of our students will have no trouble calculating a z-score.   But interpreting the z-score is a much more important concept for their future success. Here is one approach to get them there: Start with the why Rather than shoving

## How to Grade Your AP (Statistics) Tests

You have written a great test.  Now it is time to grade it. 1. Grade them the same day and return them the next day. Remember back to your own experiences in high school and college. Did you ever have

## How to Write a Great Test for AP Statistics

1. Use the same format as the AP Exam. The AP Statistics Exam consists of 40 multiple-choice questions and 6 free response questions. Students need to become familiar with both styles of questions and will learn specific strategies throughout the

## The AP Statistics Exam is Doing it Right

The AP Statistics Exam is Doing it Right After spending over 50 hours this past summer grading the 2016 AP Statistics Exam, I have some new thoughts about standardized testing. I know that standardized testing has recently come under fire

## Graphing Calculators are the New Slide Rule

Graphing Calculators are the New Slide Rule Fancy calculators allow our statistics students to do a whole lot of statistics that would be very tedious to do by hand. Unfortunately the user interface with calculators has changed very little over