Question 1

Which of the following statements is not true?

Accepted Answer

A)  A statistic is a single measure (usually numerical) that is calculated from a sample.
B)  Statistics is the science of collecting,organizing,analyzing,interpreting,and presenting data.
C)  For day-to-day business data analysis,most firms rely on a large staff of expert statisticians.
D)  A statistical test may be significant yet have no practical importance.

Question 2

GM's experience with ignition switches suggests that

Accepted Answer

A)  statistics is not applicable to automotive manufacturing.
B)  limited data may still contain important clues.
C)  good engineers can eliminate all risks.
D)  ignition switches are inherently dangerous.

Question 3

Which is least likely to be an application where statistics will be useful?

Accepted Answer

A)  Predicting whether an airfare is likely to rise or fall
B)  Designing the most desirable features for a ski pass
C)  Deciding whether offering Rice Krispies improves restaurant sales
D)  Choosing the wording of a corporate policy prohibiting smoking

Question 4

Established risk factors such as cholesterol and obesity can predict who will get heart disease about 80 percent of the time.Adding a new test called CRP can raise this percentage to 81 percent-a statistically significant difference.But would this improvement be of practical importance to a physician? To a patient? Discuss.

Accepted Answer

A single physician might feel that such ...

Question 5

We would associate the term inferential statistics with which task?

Accepted Answer

A)  Making visual displays of data
B)  Estimating unknown parameters
C)  Describing a sample of data
D)  Tabulating a survey

Question 6

Which is not a reason for an average student to study statistics?

Accepted Answer

A)  Improve technical writing skills
B)  Gain information management skills
C)  Enhance technical literacy
D)  Learn stock market strategies

Question 7

How might statistics be useful in determining the correct width of doorways in a convalescent care facility so that 99 percent of the "typical" wheelchairs can pass through the doorway without coming closer than 6 inches on either side?

Accepted Answer

Large samples could be taken of wheelchair widths and the space needed on either side,and averages could be computed.Statistics can then be applied to find the 99th percentiles.One way is to measure the widths of major brands of wheelchairs currently being sold,being sure that people are sitting in them and using their hands to move the wheels to measure the necessary clearance.Then take a similar survey of older wheelchairs that still are used.Estimate the proportion of each type of wheelchair in use,to determine what width is required for 99 percent to meet the requirement.You might also find that some wheelchair users carry a cane in their laps,which may protrude.To learn how to estimate percentiles,you need a basic class in statistics.

Question 8

Bob said,"Since statistics cannot tell for certain whether one thing caused another,there is no point in even reporting probabilities." Argue both for and against Bob's statement.

Accepted Answer

Bob is correct in saying that we usually...

Question 9

Statistics is the science of collecting,organizing,analyzing,interpreting,and presenting data.

Accepted Answer

A) True 
 B)False

Question 10

A strong correlation between A and B would imply that B is caused by A.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following statements is not true?

Accepted Answer

A)  Statistics helps refine theories through ongoing hypothesis testing.
B)  Statistics is the science of collecting,organizing,analyzing,interpreting,and presenting data.
C)  Estimating parameters is an important aspect of descriptive statistics.
D)  Statistical challenges include imperfect data and practical constraints.

Question 12

Predicting a presidential candidate's percentage of the statewide vote from a sample of 800 voters would be an example of inferential statistics.

Accepted Answer

A) True 
 B)False

Question 13

"Bob didn't wear his lucky T-shirt to class,so he failed his chemistry exam." This best illustrates which fallacy?

Accepted Answer

A)  Small sample generalization
B)  Poor survey methods
C)  Post hoc reasoning
D)  More than one of the above C

Question 14

Statistical data analysis can often distinguish between real versus perceived ethical issues.

Accepted Answer

A) True 
 B)False

Question 15

Statistics can help you handle either too little or too much information.

Accepted Answer

A) True 
 B)False

Question 16

Estimating parameters and testing hypotheses are important aspects of descriptive statistics.

Accepted Answer

A) True 
 B)False

Question 17

Descriptive statistics refers to summarizing data rather than generalizing about the population.

Accepted Answer

A) True 
 B)False

Question 18

"Tom's SUV rolled over.SUVs are dangerous." This best illustrates which fallacy?

Accepted Answer

A)  Unconscious bias
B)  Significance versus practical importance
C)  Post hoc reasoning
D)  Small sample generalization

Question 19

The science of statistics tells us whether the sample evidence is convincing.

Accepted Answer

A) True 
 B)False

Question 20

Pitfalls to consider in a statistical test include nonrandom samples,small sample size,and lack of causal links.

Accepted Answer

A) True 
 B)False  True

Exam 1: Overview of Statistics

Which of the following statements is not true?

Correct Answer
verified

GM's experience with ignition switches suggests that

Correct Answer
verified

Which is least likely to be an application where statistics will be useful?

Correct Answer
verified

Correct Answer
verified
A single physician might feel that such ...
View Answer

We would associate the term inferential statistics with which task?

Correct Answer
verified

Which is not a reason for an average student to study statistics?

Correct Answer
verified

How might statistics be useful in determining the correct width of doorways in a convalescent care facility so that 99 percent of the "typical" wheelchairs can pass through the doorway without coming closer than 6 inches on either side?

Bob said,"Since statistics cannot tell for certain whether one thing caused another,there is no point in even reporting probabilities." Argue both for and against Bob's statement.

Correct Answer
verified
Bob is correct in saying that we usually...
View Answer

Statistics is the science of collecting,organizing,analyzing,interpreting,and presenting data.

Correct Answer
verified

A strong correlation between A and B would imply that B is caused by A.

Correct Answer
verified

Which of the following statements is not true?

Correct Answer
verified

Predicting a presidential candidate's percentage of the statewide vote from a sample of 800 voters would be an example of inferential statistics.

Correct Answer
verified

"Bob didn't wear his lucky T-shirt to class,so he failed his chemistry exam." This best illustrates which fallacy?

Correct Answer
verified
C

Statistical data analysis can often distinguish between real versus perceived ethical issues.

Correct Answer
verified

Statistics can help you handle either too little or too much information.

Correct Answer
verified

Estimating parameters and testing hypotheses are important aspects of descriptive statistics.

Correct Answer
verified

Descriptive statistics refers to summarizing data rather than generalizing about the population.

Correct Answer
verified

"Tom's SUV rolled over.SUVs are dangerous." This best illustrates which fallacy?

Correct Answer
verified

The science of statistics tells us whether the sample evidence is convincing.

Correct Answer
verified

Pitfalls to consider in a statistical test include nonrandom samples,small sample size,and lack of causal links.

Correct Answer
verified
True

Exam 1: Overview of Statistics

Which of the following statements is not true?

Correct AnswerverifiedShow Answer

GM's experience with ignition switches suggests that

Correct AnswerverifiedShow Answer

Which is least likely to be an application where statistics will be useful?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedA single physician might feel that such ...View AnswerShow Answer

We would associate the term inferential statistics with which task?

Correct AnswerverifiedShow Answer

Which is not a reason for an average student to study statistics?

Correct AnswerverifiedShow Answer

How might statistics be useful in determining the correct width of doorways in a convalescent care facility so that 99 percent of the "typical" wheelchairs can pass through the doorway without coming closer than 6 inches on either side?

Bob said,"Since statistics cannot tell for certain whether one thing caused another,there is no point in even reporting probabilities." Argue both for and against Bob's statement.

Correct AnswerverifiedBob is correct in saying that we usually...View AnswerShow Answer

Statistics is the science of collecting,organizing,analyzing,interpreting,and presenting data.

Correct AnswerverifiedShow Answer

A strong correlation between A and B would imply that B is caused by A.

Correct AnswerverifiedShow Answer

Which of the following statements is not true?

Correct AnswerverifiedShow Answer

Predicting a presidential candidate's percentage of the statewide vote from a sample of 800 voters would be an example of inferential statistics.

Correct AnswerverifiedShow Answer

"Bob didn't wear his lucky T-shirt to class,so he failed his chemistry exam." This best illustrates which fallacy?

Correct AnswerverifiedC

Statistical data analysis can often distinguish between real versus perceived ethical issues.

Correct AnswerverifiedShow Answer

Statistics can help you handle either too little or too much information.

Correct AnswerverifiedShow Answer

Estimating parameters and testing hypotheses are important aspects of descriptive statistics.

Correct AnswerverifiedShow Answer

Descriptive statistics refers to summarizing data rather than generalizing about the population.

Correct AnswerverifiedShow Answer

"Tom's SUV rolled over.SUVs are dangerous." This best illustrates which fallacy?

Correct AnswerverifiedShow Answer

The science of statistics tells us whether the sample evidence is convincing.

Correct AnswerverifiedShow Answer

Pitfalls to consider in a statistical test include nonrandom samples,small sample size,and lack of causal links.

Correct AnswerverifiedTrue

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A single physician might feel that such ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Bob is correct in saying that we usually...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
True