Stratified Sampling
By: Mike • Study Guide • 567 Words • January 25, 2010 • 588 Views
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Strata: Proportion Of Variability Of Data Gathering Cost
Retail Enviroment Type Customers Expenditure Per Respondent
Online Grocery Retailer 0.13 23 0.5
Supermarket 0.62 13 1
Small Grocer 0.11
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