Do Now

1
Do Now

• Take quiz
• Have your materials on the floor so that I can
  check them
• When done with quiz, work on first page of the
  packet

2
Objectives

• Ch1 What is Statistics?
• Brief history of Statistics (What drove people to
  want to understand Statistics?)
• What makes Statistics different from regular
  Math?
• Examples of ANAD Statistics (How is Statistics
  used outside of the classroom?)

3
Introduction to Statistics

• Turn to the person next to you.
• Introduce yourself.
• Discuss what you wrote for the first page of the
  packet.
• Discuss each others articles.

4
Statistics   Etymology German Statistik
study of political facts and figures, from New
Latin statisticus of politics, from Latin
status state. Date 1770 1 a branch of
mathematics dealing with the collection,
analysis, interpretation, and presentation of
masses of numerical dataSource
http//www.merriam-webster.com/dictionary/statisti
cs
5
statistic   2. a numerical value or
function, e.g. a mean or standard deviation, used
to describe a sample or population Source
http//encarta.msn.com/encnet/features/dictionary/
DictionaryResults.aspx?refid1861714707
6
Brief History of Statistics

• Pre-historic
• Record keeping of people, animals on caves,
  pieces of wood, skins
• Egyptians (lt3100 BCE)
• analyzed the population and material wealth of
  their country
• Babylonians (lt3000 BCE)
• used small clay tablets to record tabulations of
  agricultural yields and of commodities bartered
  or sold

7
Brief History of Statistics
8
Brief History of Statistics

• Israelites (2000 BCE)
• Book of Numbers contains two censuses
• Book of 1 Chronicles describes the material
  wealth of the tribes
• China (lt2000 BCE)
• Greeks (594 BCE)
• Used census as basis for taxation

9
Brief History of Statistics

• Romans
• first government to gather extensive data about
  the population, area, and wealth of the
  territories that it controlled. Statisticus!
• Post-Roman Europe
• Few censuses were made

10
Brief History of Statistics

• William the Conqueror
• Following the Norman Conquest of England (1066),
  ordered a census to be taken (Domesday Book)
• 16th-17th Century Europe
• Much more interest in births and deaths and an
  analysis of the population and how it was
  changing (Mortality tables)
• End of the 17th century saw the birth of
  probability theory with an interest in games of
  chance

11
THE DOMESDAY BOOK
12
Brief History of Statistics

• Scientific Revolution
• Brought lots of data! Need for ways to describe
  it.
• Probability theory helped move this forward by
  leaps and bounds
• Statistics (as a separate field of mathematics)
  is born in the 19th century
• Genetics heredity
• 20th century saw an explosion in the application
  of the field of Statistics (e.g. quality control,
  psychological studies)
• Source http//encarta.msn.com/encyclopedia_761562
  521/Statistics.htmls2

13
How is Statistics Different?

• If there was no variation (uncertainty), there
  would be no need for Statistics
• Statistics uses mathematics to explain this
  uncertainty with precision
• The conclusions drawn can be open to
  interpretation (no right answer)
• Much like detective-work (what story does the
  data tell?)

14
How is Statistics used in the workplace?
15
Homework

• Complete questionnaire on website (if not done so
  already)
• On a separate sheet of paper, summarize your
  article in one paragraph
• Under the summary, in complete sentences,
  determine the Who, What, Where, When, How, and
  Why of the article. See Ch. 2 for an example of
  what I am talking about.