Statistics Chapter 1 Quiz

Which of the following is an example of statistical inference? Calculating the mean age of fruit trees that were damaged by Mediterranean fruit flies in California by examining randomly?chosen trees that have been cut down.



2 CORRECT

Which of the following is not a reason one should have a knowledge of statistics?




.
(X)D) to be able to distort information in an effort to change a government regulation that negatively affects one's business.

3 CORRECT

Which of the following statements is false?



(X)C) The main goal of descriptive statistics is to estimate characteristics of populations.

4 CORRECT

The collection, summarizing, and reporting of socioeconomic and physical characteristics of the employees of a particular firm is an example of



(X)B) descriptive statistics.



5 CORRECT

The post hoc fallacy is the logical error of



(X)C) concluding that since A preceded B, then B must have been caused by A.




6 CORRECT

"Bob must be rich. He's a lawyer, and lawyers make lots of money." This statement best illustrates which fallacy?



(X)D) Generalizing from an average to an individual.

7 CORRECT

Which is not an ethical obligation of a statistician?



(X)C) To support client wishes in drawing conclusions from the data.



8 CORRECT

Which of the following is not a characteristic of a good business data analyst?



(X)C) Adapts answers to client desires.



9 CORRECT

Which of the following statements is not true?



(X)C) For day?to?day data business analysis, most firms rely on a staff of expert statisticians.



10 CORRECT

Which of the following is the clearest example of inferential statistics?



(X)C) Predicting a candidate's percent of the statewide vote from a sample of 800 voters.



11 CORRECT

If 25% of the students in my morning statistics class watch 8 or more hours of television a week, I conclude that 25% of all students at the University watch 8 or more hours of television a week. The most important logical weakness of this conclusion would be



(X)B) using a sample that may not be representative of all students.




12 CORRECT

Empirical data are



(X)B) collected by tabulating or measuring something in a consistent way.



13 CORRECT

Which is not a key aspect of business intelligence?



(X)C)