ECON221 Lecture Notes - Simple Random Sample, Systematic Sampling, Frequency Distribution
21 Jun 2013
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Document Summary
Deduction vs. induction: from what is given to justify of other propositions, inducting info have info and making more general assumptions. Processes rules and variability: particular cases and general patter. Stats provides ways to describe data and proceed with non-deductive reasoning: coming with systematic way of retrieving information. Population collection of all items of interest or under investigation: n represents population size. Sample observed subset of population: n represents sample size. Parameter specific characteristic of a population. Statistic specific characteristic of a sample. Examples of populations: all incorporated businesses in ontario. Simple random sampling procedure in which: each member of population is chosen strictly by chance, each member of population is equally likely to be chosen, every possible sample of n objects. Cross tables (contingency tables) - list number of observations for every combination of values for two categorical or ordinal variables.
