| "It is by the aid of statistics that law in the social sphere can be ascertained and codified." -- (Florence Nightingale, 1820-1910) 
Claudius Ptolemy (Second century A.D.): He produced a cosmological model of the universe that had the earth surrounded by eight concentric spheres that carried the moon, the sun, the five planets known at the time, and the stars (on the outermost sphere). The model was embraced by Christian thinkers since (a) it made Earth the center of the universe (and the center of God's attention), and (b) provided room outside the sphere of stars for Heaven. The Christian Church accepted this earth-centered model for about 1500 years. | 
What did one of Herkimer's pet fleas say to the other flea when it wanted to go outside?  Answer: "Shall we hop or take the dog." Herky's friends: CAL O'REE... he is always concerned about his weight. DEA KLINE... she never accepts things offered to her. |
| ASSIGNMENT #32 Reading: Review Sections 5.1 and 5.2, as necessary. Exercises: 5.20, 5.21 5.23, 5.26, 5.28, 5.38, 5.47, 5.48 |
You are working with ideas from Sections 5.1 and5.2.
WHAT IS BELOW IS ALSO DISPLAYED ON THE ASSIGNMENT#31 SHEET.
Important words/phrases/thoughts introduced inSection 5.1 are in black. Those in Section 5.2 in are blue. Thereis a bit of overlap, as you will note. These words and phrases shouldbe familiar to you. After reading Sections 5.1 and 5.2, you shouldnot draw a mental blank when you encounter them.
| sampling | voluntary response sample | experiment | confounding | statistical inference |
| population | sample, sample design | convenience sampling | simple random sample (SRS) | table of random digits |
| probability sample | stratified random sample, strata | multistage sample design | undercoverage | nonresponse |
| response bias | wording of questions | observational study | experiment | experimental units |
| subjects | treatment | placebo effect | control group | bias |
| matching | randomization | completely randomized | statistically significant | hidden bias |
| PRINCIPLES OF EXPERIMENTAL DESIGN: 1. Control ... 2. Randomization ... 3. Replication |
| double-blind experiment | block design | matched pairs design | lack of realism | probability model |
LINK TO SECTIONSUMMARIES
LINK TO STATISTICS HOMEPAGE
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Text:
The Practice of Statistics, by Yates, Moore, McCabe. New York,W.H. Freeman and Company, 1999. (ISBN 0-7167-3370-6)
Supplemental books:
The Cartoon Guide to Statistics, by Gonick and Smith. NewYork, HarperCollins Publishers, 1993. (ISBN 0-06-273102-5)
How to Lie with Statistics, by Darrell Huff. New York, W.W.Norton & Company, 1982 (ISBN 0-393-09426-X)
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