13dec2011 - unknown population parameter Types of...

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CR Long C502: Biostatistical Thinking 13 Dec 2011 1 Learning Objectives 1. Recognize the difference between descriptive and inferential statistics Terminology Descriptive Statistics : statistics used to describe the sample data; also referred to as Summary Statistics Univariate (or Univariable) Descriptive Statistics : statistics used to describe the sample data for one variable at a time Note: graphical methods are often used to display both tabular and numerical descriptive statistics Inferential Statistics : using sample statistics to make inference about an
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Unformatted text preview: unknown population parameter Types of Inferential Statistics: 1. Estimation 2. Hypothesis Testing Estimation Estimate of a population parameter = true parameter + bias + random error Point Estimation: the use of a sample statistic as the estimate of an unknown population parameter gives an idea of the direction (i.e. +/-) and magnitude of the parameter Example: to estimate the population mean, we use the sample mean Example: to estimate the population proportion, we use the sample proportion...
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This note was uploaded on 01/03/2012 for the course CLIN 51502 taught by Professor Long during the Fall '11 term at Palmer Chiropractic.

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