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Section 1-5

Section 1-5. Uses and Misuses of Statistics. There are three types of lies ----- lies, damn lies and statistics. Statistics…can’t get any respect?. Torture numbers, and they'll confess to anything. ~Gregg Easterbrook Statistics can be made to prove anything - even the truth. ~Author Unknown

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Section 1-5

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  1. Section 1-5 Uses and Misuses of Statistics

  2. There are three types of lies ----- lies, damn lies and statistics

  3. Statistics…can’t get any respect? • Torture numbers, and they'll confess to anything. ~Gregg Easterbrook • Statistics can be made to prove anything - even the truth. ~Author Unknown • He uses statistics as a drunken man uses lampposts - for support rather than for illumination.  ~Andrew Lang • There are two kinds of statistics, the kind you look up and the kind you make up.  ~Rex Stout, Death of a Doxy

  4. Death in Iraq

  5. Death in Iraq

  6. Claim: • 80% of all Resumes are Misleading – • Source Xukor, Inc. complied from a survey of 10,000 applications and resumes combined

  7. Are Resumes misleading: MOST FREQUENT AREAS WHERE THEY ARE MISLEADING

  8. 1-5 Uses and Misuses of Statistics • Suspect Samples • Is the sample large enough? • How was the sample selected? • Is the sample representative of the population? • Ambiguous Averages • What particular measure of average was used and why? Bluman Chapter 1

  9. 1-5 Uses and Misuses of Statistics • Changing the Subject • Are different values used to represent the same data? • Detached Statistics • One third fewer calories…….than what? • Implied Connections • Studies suggest that some people may understand what this statement means. Bluman Chapter 1

  10. 1-5 Uses and Misuses of Statistics • Misleading Graphs • Are the scales for the x-axis and y-axis appropriate for the data? • Faulty Survey Questions • Do you feel that statistics teachers should be paid higher salaries? • Do you favor increasing tuition so that colleges can pay statistics teachers higher salaries? Bluman Chapter 1

  11. Homework Read Do Review Exercises on page 26 #1- 28 allany of them that are not already assigned. • Sec 1.5 and know the important terms. Extra Credit Opportunity: If you do any activity to observe Veteran’s Day, let me know and I will give you extra credit. Bluman Chapter 1

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