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Unformatted text preview: True and Sample Populations True Population vs. Sample Population o Statistical features of true population may not be known o Sample estimates featuers of true populatin Impractical to measure every individual o Time and resource constraints Why a random sample? o Random sample is unbiased estimator of population features What is random o Random doesnt always look random o Haphazardness is not random o Random number generators Types of Data Discrete vs. Continuous Data Discrete categories, no in betweens (e.g., high, medium, low) Continuous along a continuum, always inbetweens (e.g, time, length, mass)...
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This note was uploaded on 10/13/2011 for the course BS 158H taught by Professor Elzinga during the Fall '08 term at Michigan State University.
- Fall '08