Stat 1124 - Experiments - Ch 9

Stat 1124 - Experiments - Ch 9 - Statistical Methods I Unit...

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Statistical Methods – I Unit 2 – Experiments Albert Wong, Ph.D. Langara College January 2009 Experiments • A study that imposes some treatment on individuals in order to observe and statistically compare their responses • The purpose is to study whether the treatment causes significant changes in the response. Terminology • An individual being studied in an experiment is often called a subject . • The explanatory variables is an experiment are often called factors . •A treatment is any specific experimental condition applied to the subjects. If an experiment has several factors, a treatment is a combination of specific values of each factors
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An Example • In an experiment to see which one of the modalities – classroom, online, self study is more effective in a statistics course. • Students participating in the study is the subjects • The modality is the factor which has three values: Classroom, online, and self study. The treatment is the modality • The response variable could be the score of the
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This note was uploaded on 07/14/2010 for the course STATS 1124 taught by Professor Michael during the Summer '09 term at Langara.

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Stat 1124 - Experiments - Ch 9 - Statistical Methods I Unit...

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