"You are the average of the 5 people you spend the most time with." Jim Rohn
For a great introduction to statistics and graphs watch this presentation on how Olympic sports have changed over the last 100 years.
The World reduced to 100 People
For another interesting use of graphs watch Hans Rosling on world population growth.
Do you want good relationships with people? - Professor John Gottman has some interesting data.
Categorical versus nominal data
Organizing Data into a Frequency table and Histogram (Bar Chart)
How to make an OGIVE
Types of Data Distributions - skewed, normal, bi modal, etc
The MEAN from Frequency Distribution Table
Interesting Video - How PIXAR use averaging to create characters
Stem and Leaf Plot
Box and Whisker Plot
Comparing Data sets
Summary plus Standard Deviation
How to draw a box plot in Excel
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