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Beginning with an explanation of the difference between "qualitative" and "quantitative" data, this program goes on to explain various ways of presenting data, including Dot Plots, Bar Charts, and Histograms. The program also explains Summary Measures, Characteristic Values, and how to arrive at the Mode, Median, and Mean, with a discussion of their individual drawbacks and advantages. The program goes on to discuss handling the Spread of Distribution, and explains techniques for measuring Spread, including Quartiles, Inter-quartile Range, and Standard Deviation, and concludes with modeling using Normal Distribution. (25 minutes)



 
                

Item#: This title is currently not available.
Copyright date: ©1996



Part of the Series : Why Use Statistics?
     


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Using Samples
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This program begins with an explanation of the difference between a Population and a Sample, and the reasons why samples are so important in estimating data relating to populations too large or too impractical to be measured in their entirety. The pr...(more details)
 
Handling Variability
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This program examines the measurement of blood pressure to introduce the idea that multiple measurements may produce very variable results. The idea that measurement "errors," together with fluctuations in the parameters being measured, create variab...(more details)
 
Bivariate Data: When y Depends on x
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This program demonstrates how "qualitative" bivariate data can be visualized by using a modification of the simple Bar Chart. Quantitative data is dealt with by developing the Dot Plot into the Scatter Diagram, which allows any correlation to show it...(more details)
 
Probability

Calculating basic probabilities of one or more events. Examples of independent and dependent probabilities. Drawing and using tree diagrams. (13 minutes)(more details)
 


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