1. LESSON #15 CHAPTER 2 ERRORS MADE IN SURVEYS

2. RANDOM SAMPLING ERROR

3. UNDER COVERAGE AND BIAS SAMPLING ERRORS VOLUNTA RY RESPONS E SURVEY CONVENI ENCE SURVEY

4. 1. PROCESSING ERRORS – INCLUDES MECHANICAL, DATA ENTRY, AND MATH ERRORS… NOT COMMON SO MUCH. NON SAMPLING ERRORS

5. 2. RESPONSE ERRORS – PERSON LIES ABOUT ANSWER, REMEMBERS INFORMATION WRONG, OR DOESN ’ T UNDER - STAND QUESTION. NON SAMPLING ERRORS

6.  PERSON REFUSES TO PARTICIPA TE OR DOESN ’ T REPLY ( I. E. ANSWER THE PHONE ).  CALLER ID  SENIORS AFRAID TO GIVE OUT INFO NON RESPONSE ERRORS

7.  KNOW YOUR AUDIENCE !  MAKE SURE YOUR QUESTIONS DO NOT APPEAR TO FAVOR ONE SIDE OVER ANOTHER.  MAKE SURE THAT ALL VOCABULARY WILL BE KNOWN TO YOUR SAMPLE.  MAKE SURE THAT YOUR QUESTIONS DO NOT APPEAR TO THREATEN. WORDING IN A SURVEY

8. Example : “ Do you favor imposin g a closed campus for Irvingt on student s if it means increas ed safety for your childre n? ” Example : “ Do you favor leaving Irvington campus open for students during lunch time so that nearby businesses would not need to close due to lack of customers? ” WORDING PROBLEMS???

9. Who carried out the survey? What was the population? How was the sample selected? How large was the sample? What was the response rate? How were the subjects contacted? When was the survey conducted? What were the exact questions? BEFORE BELIEVING A SURVEY, ASK YOURSELF …

10. THE MOST ANNOYING WORD THAT IS USED IN A CONVERSATION, ACCORDING TO A SURVEY… Whatever!

11. (FROM WWW.UPI.COM) NEW YORK, Oct. 7 (UPI) -- Nearly half of Americans surveyed for a new poll said "whatever" was the most annoying word that could be used in a conversation. The Marist Poll received votes for "You know" and "anyway," but they weren't even close to the 47 percent that pegged "whatever" as something that had definitely run its course. The breakdown found "whatever" to be particularly tiresome among respondents in the Midwest, Latinos and people under 45 years old. Phrases that bug Americans include "it is what it is" and "at the end of the day." The poll, based on 938 responses, had a margin of error of 3.5 percent.

12. Now let ’ s go over Part 1 of your Ch. 2 Assig nment