Exam 1: A Preview of Business Statistics

Car dealers sometimes provide surveys so that customers can evaluate their purchasing experience at the establishment.What kinds of decisions might be made on the basis of this information?

The difference between the highest and lowest values in the sample is known as the sample:

The sole purpose of the U.S.Census Bureau is to simply count how many people live in the United States.

A summary measure that is computed from a sample to describe a characteristic of the population is called:

In the nominal measurement scale numbers represent "greater than" or "less than" measurements,such as rankings or preferences.

A survey that asks the respondent to indicate the number of cats in the household is an example of which type of variable?

Before leaving a particular restaurant,customers are asked to respond to the questions listed below.For each question,determine whether the possible responses are discrete or continuous variables. A)What is the approximate distance of the restaurant from your residence? B)How many minutes did you wait until your server greeted you? C)How many times a month do you typically dine out? D)How many people were in your dinner party tonight?

Daily ambient temperatures in degrees Fahrenheit are being recorded for a global warming study.This scale of measurement for this data would be:

Match the terms with the definitions.(Note: there are more definitions than terms) -qualitative variable

Which of the following is most likely a continuous quantitative variable?

List the steps included in the research process.

ATP singles rankings for tennis players rank Rafael Nadal as 2 and Roger Federer as 1.This is an example of an interval scale.

Identify each of the following studies as either descriptive statistics or inferential statistics: A)Examine the heights of a sample of 50 NBA basketball players to see if the average height of all NBA basketball players is 75 inches. B)Post the average midterm score for the statistics class. C)Estimate the percentage of the US population that will vote for George W. Bush in the 2004 presidential election. D)Select a random sample of 250 babies born in 2002 and estimate the birth weight of all babies born during the same year. E)Examine the weights of a sample of 20 candy bars to see if their average weight is 6 ounces.

Stating that Wal-Mart's sales increased 6.2% this quarter when compared to last quarter is an example of descriptive statistics.

A summary measure that is computed using the entire population is called:

A businesswoman who is running for the vacant City Commission seat with 20,000 registered voters conducts a survey.In the survey,56% of the 500 registered voters interviewed say they planned to vote for her. A)What is the population of interest? B)What is the sample? C)Is the 56% a parameter or a statistic?

When data are collected in a statistical study for only a portion or subset of all elements of interest we are using a:

For each of the following indicate whether the variable of interest would be qualitative or quantitative. A)Whether you are a US citizen B)Your marital status C)Number of cars in a parking lot D)Amount of time you spend per week on your homework E)Lily's travel time from her apartment to the student union at Central Michigan University F)Heidi's favorite brand of tennis balls

Improperly used,statistics can become an effective weapon with which to persuade or manipulate others into beliefs or behaviors that we would like them to adopt.

A research firm observes that men are twice as likely as women to hunt.Does this information represent descriptive statistics or inferential statistics? Why?