VCU STAT 210 - Lecture5 (44 pages)
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- Pages:
- 44
- School:
- Virginia Commonwealth University
- Course:
- Stat 210 - Basic Practice of Statistics
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Unformatted text preview:
STAT 210 Lecture 5 Design of Experiments September 6 2017 Example to think about Suppose the population is all students enrolled in STAT 210 this semester There are ten sections and to select a sample of 40 students the following was done 4 students were randomly selected from each of the 10 sections What type of sampling procedure is this Test 1 Friday September 8 Questions from 1 00 to 1 10 Test from 1 10 to 1 50 papers due at 10 50 Covers chapters 1 and 2 pages 1 42 Combination of multiple choice questions and a few written questions Practice tests posted on Blackboard Practice Problems Pages 38 42 Relevant problems II 7 II 8 II 9 II 10 Recommended problem II 10 Additional Reading and Examples Pages 36 37 Top Hat B Design of Experiments Design and carry out an experiment that will allow us to evaluate the effect of a treatment or treatments Example Suppose we are interested in the effect of a new drug in reducing blood pressure Design of Experiments 1 Experimental Units the subjects or individuals or units on which the measurements are made Example People medically identified as suffering from high blood pressure diastolic pressure measurement of 90 or higher Design of Experiments Experimental Units the subjects or individuals or units on which the measurements are made Treatment an experimental condition applied to the experimental units xample A new blood pressure medicine being evaluated and the three leading blood pressure medicines that have been previously approved Design of Experiments Response the characteristic that is measured on each experimental unit xample The diastolic blood pressure measurement of the patients in the study or possibly the reduction in the diastolic blood pressure measurement before and after treatment Design of Experiments Response the characteristic that is measured on each experimental unit Comparison we want to compare the results for one group or treatment with the results for another group or treatment or groups xample Compare
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