UMass Amherst PUBHLTH 391B - 9:8:14 biostatistics class notes (6 pages)

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9:8:14 biostatistics class notes



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9:8:14 biostatistics class notes

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Pages:
6
School:
University of Massachusetts Amherst
Course:
Pubhlth 391b - Intro to Biostat for Pubhlth

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9 8 biostatistics class notes Evolution of physical activity guidelines o 1978 exercise training to improve performance o present daily physical activity to improve health physical activity o exercise subset of physical activity includes things throughout the day transportation occupation leisure household daily living o exercise physical activity that is planned structured and repetitive with the purpose of improving or maintaining one or more components of physical fitness o physical fitness a set of attributes that people have or achieve that relates total physical activity college vs high school o still highly active person distributed differently o in college more commute less household is total movement associated with health related factors regardless of how much moderate vigorous intensity exercise you perform Research process o Research question o Hypothesis o Identify research design o Data collection o Presentation of data o Interpretation of data Learning objectives o Define biostats and role in research process o Understand how samples are used to draw conclusions on populations o what is biostats o Application of statistical principles to medical public health and biological applications Collecting summarizing interpreting information and making inferences Two types o Descriptive biostats Enumeration organization and graphical representation of data from a sample Sets up second part o Inferential stats Draw conclusions from incomplete information Generalizing from the specific sample Use available infor in a sample to draw inferences about the population from which the sample was selected Where do we get data Sampling Useful terminology o Population Class of individuals o Parameters Are numerical facts about he population o Sample A subset of the population o Sampling frame The list from which potential subjects are drawn o Statistics Are numerical factors about the sample o Variable Is something that can vary o Data The values you obtain by measuring



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