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Defusing Statistics Tracey Minzenmayer SCC/MLA 2007
The Basics ,[object Object],[object Object],[object Object]
Discrete & Continuous Variables ,[object Object],6 lb  <  8 lb  <  10 lb
Assessment: Discrete &  Continuous Variables ,[object Object],[object Object],[object Object],[object Object]
Independent & Dependent Variables ,[object Object],[object Object],[object Object],[object Object],[object Object]
Independent & Dependent Variables ,[object Object],[object Object],[object Object],[object Object]
The Normal Curve
Over half the values are within one standard deviation of the mean
Outlier- a value far away from the  rest of the values
Standard Deviation ,[object Object]
Different Standard Deviations
Assessment: Variables & Standard Deviation  ,[object Object],[object Object]
Statistical Analysis ,[object Object],[object Object]
A Word About Trends. . .
Any Questions? Join us on Ning:  http://libassess.ning.com
Photo Credits ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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SCC 2007 Defusing Statistics

Editor's Notes

  1. It’s time to cover what to do when we’re finally ready to take all that information we’ve gathered and do something with it. . .And this is where a lot of us start having second thoughts about this whole assessment thing. This means the dreaded S word—statistics. It’s enough to make ordinarily brave librarians quake in their sensible shoes. Since statistics can be a little overwhelming at times, we’re going to make this as simplistic and non-threatening as possible.