"The investigation of mathematical truths accustoms the mind to method and correctness in reasoning, and is an employment peculiarly worth of rational beings." -- (George Washington, 1732-1799) Benjamin Banneker (1731-1806): An African-American with tremendous mathematical abilities, Banneker lived during a period of United States history when a struggling country had little interest in scholarly pursuits. Banneker was a problem solver and developed considerable skills in the areas of astronomy and surveying. President George Washington and Secretary of State Thomas Jefferson both knew Banneker, and made use of his work. Born in Maryland to a former slave, Banneker sent a letter to Jefferson, a slave owner, criticizing slavery. When Herkimer was a waiter, what did he say to the customer who complained about the mud in his coffee? Answer: What do you expect? It was just ground this morning." Herky's friends: RHODA HORSE... a jockey. PERRY NOID ... this guy gets frightened quite easily. ASSIGNMENT #31 Assignment due after the test on Chapter 4. Reading: Section 5.2, pages 265-283, including SUMMARY on pages 283-284. Exercises: None. Concentrate on the reading and the terminology introduced in this section. We will be working on problems during the class period.

You are in Section 5.2

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

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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)