Putting AUTOGRAPH to work with data  
Although Autograph is principally a coordinate geometry package, it does handle data in both singlevariable mode and bivariate. It can also tackle the tricky concepts of discrete and continuous variables, and also frequency and frequency density when the classes are unequal.  
BABY DATA: USING AUTOGRAPH FOR LINEAR REGRESSION  
Watch the video to have a tour of the dataset, and see how Excel then Autograph can be used to explore the relationship between the length of gestation and the birth weight of the baby.



BABY DATA: USING AUTOGRAPH TO TEST WHICH VARIABLES ARE NORMAL  


BABY DATA: USING AUTOGRAPH FOR HISTOGRAMS  
This video takes the set of 1175 ages of Mothers having babies and creates a histogram in Autograph. You may need to watch this more than once! 

WHY DO THEY WEIGH THE LUGGAGE AND NOT US? AN INVESTIGATION USING AUTOGRAPH  
First we need some data, and for this go to the TSM useful files page and download the Excel file whcih has data for over 7500 "Weights of Patients". Watch this video to see how to paste this data into Autograph. See how to use the "sample means" utility to explore the distribution of the sample means of passengers starting with just 5 passengers, then 18 (as in the Charlotte air crash) and finally a typical jumbo jet with 350 on board!


Douglas Butler 