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Statistics Test 1 - Statistics Test 1 Chapters 1,2 19:56...

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Statistics Test 1  19:56 Chapters 1,2 Descriptive Statistics  Organizing and summarizing numerical data in order to discrbe various features of the  data  Inferential statistics  Procedures and methods that can be used to make inferences, predictions, and  decisions about the population using the information contained in a sample Types of samples  Systematic sample – select ever k-th item from a list  Stratified – select randomly with defined strata  Cluster- strata are like geographic regions  Judgment – expertise of the sampler  Convenience – whatever is easier  Qualitative – non-numerical and categorical  Quantitative – numeric  Discrete – assumes only specific points on a scale  Continuous – assumes all values within an interval  Levels of measurement  Nominal  Categorical, qualitative, or classification data
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