Statistics Blog > sigma / sqrt (n) You’ll come across a couple of different formulas when calculating z-scores: When I first started learning statistics, the different formulas completely confused me. They still do (a little) and I have to think…

# Same Birthday Odds: Higher Than You Think!

Statistics Blog > Same Birthday Odds It stands to reason that same birthday odds for one person meeting another are 1/365 (365 days in the year and your birthday is on one of them). But consider this: If you get…

# Dyscalculia: An Essential Guide for Parents

Blog > What is Dyscalculia? This article is a condensed version of my book, Dyscalculia: an Essential Guide for Parents. The paperback is available from Amazon. For a free PDF of the book, click here for the download. Contents (click…

# Statistics Made Easy: Six Easy Tips to Ace Your Class!

Statistics Blog > Statistics Made Easy If you want to pass your stats class, these tips will ensure that you get through your class. Statistics Made Easy Tip #1 Go to every class and do all the homework for the…

# Misleading Statistics Examples in Advertising and The News

Statistics Blog > Misleading Statistics Examples In my previous post, I wrote about misleading graphs in real-life. Misleading statistics examples ranged from Fox News’ coverage of politics to The Times newspaper’s claim that it beat the competition with slightly distorted…

# Cool Math Games

Blog > Cool Math Games The Top 10 Best Cool Math Games: Probability and Statistics You’re never too old to play a game if you’re learning stats. Take a break from your textbook and have fun with these games. I…

# Best Calculator for Statistics? A Quick Rundown

Probability and Statistics > Best Calculator for Statistics What is the Best Calculator for Statistics? Trying to choose the best calculator for statistics? You have many models to choose from. As of now, the TI-83, TI-86 and TI-89 are the…