Statistics 2070 – Fall 2010 Assignment Number 1 Due: Friday August 27 1. Who sai
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Question
Statistics 2070 – Fall 2010
Assignment Number 1
Due: Friday August 27
1. Who said, “The secret language of statistics, so appealing in a fact minded culture, is employed to sensationalize, inflate, confuse, and oversimplify. The crooks already know these tricks; honest people must learn them in self-defense.”
a. Florence Nightingale
b. National Council of Teachers of Mathematics
c. U.S. Bureau of Labor/Popular Science
d. Darrell Huff
e. H. G. Wells
2. Who said, “Demand for statistical wonks will swell by 20% by 2018?”
a. Florence Nightingale
b. National Council of Teachers of Mathematics
c. U.S. Bureau of Labor/Popular Science
d. Darrell Huff
e. H. G. Wells
3. Who said, “An informed populace will be better able to tell the difference between being informed and being manipulated.”
a. Florence Nightingale
b. National Council of Teachers of Mathematics
c. U.S. Bureau of Labor/Popular Science
d. Darrell Huff
e. H. G. Wells
4. A variable is a characteristic of something which
a. can be measured
b. can be measured and varies
5. Measurement is a means of assigning values (numerical and non-numerical) to a variable’s response possibilities.
a. True
b. False
6. Bias is defined as
a. systematic error
b. error
For problems 7 through 14 specify the level of measurement for the variable being presented.
7. Movie Category (drama, comedy, horror, sci-fi)
a. Categorical b. Ordinal c. Ratio d. Constant
8. Size of car according to the following scale (subcompact, compact, mid-size, full-size)
a. Categorical b. Ordinal c. Ratio d. Constant
9. Nationality
a. Categorical b. Ordinal c. Ratio d. Constant
10. Measuring eye sight as the answer to the question “Can you see, Yes or No?”
a. Categorical b. Ordinal c. Ratio d. Constant
11. Measuring eye sight of blind people as the answer to the question “Can you see, Yes or No?”
a. Categorical b. Ordinal c. Ratio d. Constant
12. Age measured in years to the nearest 1/100th of a year.
a. Categorical b. Ordinal c. Ratio d. Constant
13. Grade in class on the scale (A, B, C, D, F)
a. Categorical b. Ordinal c. Ratio d. Constant
14. Level of endorsement of the statement, “I believe there is a need for immigration reform,” on the scale [1 = strongly disagree, 2 = disagree, 3 = don’t care, 4 = agree, 5 = strongly agree]
a. Categorical b. Ordinal c. Ratio d. Constant
Use the following scenario for problems 15 through 18. We would like to know the age and political affiliation (democrat, republican, or other) of each of the 100 United States Senators.
15. List one of the variables mentioned in the scenario. __________
16. What level of measurement is this variable? __________
17. List a second variable mentioned in the scenario. __________
18. What level of measurement is this variable? __________
Use the headline from an article taken from USA Today (August 19, 2010) for problems 19 and 20.
Which city has the most honesty residents?
19. What is the variable indicated in this headline? __________
20. What is this variable’s level of measurement? __________
Explanation / Answer
1.D 2.C 3.D 4.B 5.A 6.A 7.A 8.B 9.A 10.A 11.D 12.C 13.B 14.B 15.Age 16. Ratio 17. Political Affiliation 18. Categorical 19.Honesty 20. Categorical