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Chapter One by Mind Map: Chapter One
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Chapter One

Information obatined from Mind on Statistics, 3rd edition, Utts Heckard, Thomson Brooks Cole, 2007 Wikipedia.com     Mind on Statistics, 3rd edition, Utts Heckard, Thomson Brooks Cole, 2007  

What is Statistics

Statistics - "... a collection of procedures and principles for gathering data and analyzing information to help people make decisions when faced with uncertainty." (Utts, 2007)

Case Study 3

Moral of the Story

"A representative sample of only a few thousand, or perhaps even a few hundred, can give reasonably accurate information about a population of many millions." (Utts, 2007)

Key Terms

Polulation

Random sample

Sample survey

Margin of error

Case Study 4

Moral of the Story

"An unrepresentative sample, even a large, tells you almost nothing about the populations." (Utts, 2007)

Key Terms

Nonresponse bias

Self-selected sample

Volunteer sample

Case Study 5

Moral of the Story

"Cause-and-effect conclusions cannot generally be made on the basis of an oberservational study." (Utts, 2007)

Key Terms

Observational study

Variable

Confounding variable

Case Study 7

Moral of the story

"A statistically significant finding sdoes not necessarily have practical significance or importance. When a study reports a statistically significant finding, find out the magnitude of the relationship or differnece." (Utts, 2007)

Key Terms

Case Study1

Moral of the Story

"Simple summaries of data can tell an interesting story and are easier to diegest than long lists." (Utts, 2007)  

Key Terms

Dotplot

Five-number summary

Data

Median

Lower quartile

Upper quartile

Case Study 6

Moral of the Story

"Cause-and-effect conclusions can gernally be made on the basis of randomized experiments." (Utts, 2007)

Key Terms

Randomized experiment

Treatment

Random assignment

Placebo

Statistically significant

Practical importance

Case Study 2

Moral of the Story

"When discussing the change in the rate or risk of occurrence of something make sure you also include the base rate or baseline risk." (Utts, 2007)

Key Terms

Rate

Risk

Base rate

Baseline risk