Stat Chp. 1

descriptive, categorical, or quantitative and descriptive

***A Scanner Data User Survey of 50 companies found that the average amount spent on scanner data per category of consumer goods was $387,325 (Mercer Management Consulting, Inc., April 24, 1997). The $387,325 is an example of _____.

ratio, interval, or ordinal

**For ease of data entry into a university database, 1 denotes the student is enrolled in an undergraduate degree program, 2 indicates the student is enrolled in a master's degree program, and 3 indicates the student is enrolled in a doctoral degree program. In this case, the data are which scale of measurement?

C. 60% of the sample of 5 companies are banking industries

A sample of five Fortune 500 companies possessed the following industry codes: banking, banking, finance, retail, and banking. Based on this information, which of the following statements is correct? A. if 2 other fortune 500 companies were chosen, 60% of them would be banking industries B. 60% of all fortune 500 companies are banking industries C. 60% of the sample of 5 companies are banking industries D. banking is the most common type of industry among all fortune 500 companies

A. categorical data

Arithmetic operations are inappropriate for _____ A. categorical data B. large sets of data C. both categorical and quantitative D. quantitative

D. May be either numeric or nonnumeric

Categorical data____ A. are always nonmember B. indicate how much/how many C. are always numeric D. may be either numeric or nonnumeric

A. automated, predictive

Dr. Kurt Thearling, a leading practitioner in the field, defines data mining as "the _____ extraction of _____ information from databases." A. automated, predictive B. thorough, insightful C. intentional, useful D. timely, accurate

D. continuous; ratio

Flight time from Cincinnati to Atlanta is an example of a _____ variable and _____ measurement. A. discrete; ratio B. continuous; interval C. discrete; interval D. continuous; ratio

quantitative variable

In a questionnaire, respondents are asked to record their age in years. Age is an example of a _____.

D. Only an approximation, since it is based upon sample info

In a recent study based upon an inspection of 200 homes in Daisy City, 120 violated one or more city codes. The manager's statement that 60% of the city's 3,000 homes are in violation of city codes is _____ A. none of the answers B. an accurate statement C. obvi wrong, since it is based upon a study of only 200 homes D. only an approximation, since it is based upon sample info

sample

In a recent study based upon an inspection of 200 homes in Daisy City, 120 were found to violate one or more city codes. Refer to Exhibit 1-1. The Daisy City study is an example of the use of a _____.

C. statistical inference

In a recent study based upon an inspection of 200 homes in Daisy City, 120 were found to violate one or more city codes. Refer to Exhibit 1-1. The city manager released a statement that 60% of Daisy City's 3,000 homes are in violation of city codes. The manager's statement is an example of _____. A. descriptive statistics B. a census C. statistical inference D. an experiment

statistical inference

In a sample of 3,200 registered voters, 1,440, or 45%, approve of the way the president is doing his job. Refer to Exhibit 1-2. A political pollster states, "Forty five percent of all voters approve of the president." This statement is an example of _____.

D. statistical inference

In a sample of 3,200 registered voters, 1,440, or 45%, approve of the way the president is doing his job. Refer to Exhibit 1-2. A political pollster states, "Forty five percent of all voters approve of the president." This statement is an example of _____. A. a sample B. a population C. descriptive statistics D. statistical inference

categorical data

In an application for a credit card, potential customers are asked for their social security numbers. A social security number is an example of a _____.

categorical variable

In an application for a credit card, potential customers are asked for their social security numbers. A social security number is an example of a _____.

D. discrete; continuous

Quantitative data that measure "how many" are ________; quantitative data that measure "how much" are ________. A. interval; ratio B. ratio; interval C. continuous; discrete D. discrete; continuous

sample

Six hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. The 600 residents in this study is an example of a(n) _____.

B. quantitative data

The birth weight of newborns, measured in grams, is an example of _____. A. either categorical or quantitative B. quantitative data C. categorical D. neither cat or qaun

10

The number of observations in a complete data set having 10 elements and 5 variables is _____.

C. descriptive statistics

The summaries of data, which may be tabular, graphical, or numerical, are referred to as _____. A. statistical inference B. inferential statistics C. descriptive statistics D. report generation

Ratio

When the data have properties of interval data and the multiplication or division of 2 values is meaningful, the variable has which scale of measurement?

D. an estimate of the # of alaska residents who have visited canada

Which of the following is NOT an example of descriptive statistics? A. a histogram depicting the age distribution for 30 randomly selected students B. the proportion of mailed-out questionnaires that were returned B. a table summarizing the data collected in a sample of new-car buyers D. an estimate of the # of alaska residents who have visited canada

B. social security #

Which of the following is an example of categorical data? A. # of square feet of carpet B. social security # C. hight, in meters, of a diving board D. score on a multiple choice exam

C. categorical

Which of the following is not a scale of measurement? A. interval B. nominal C. categorical D. ordinal

B. U.S. Census Bureau

Which of the following is not an example of a firm that sells or leases business database services to clients? A. dun and bradstreet B. us census bureau C. dow jones company D. bloomberg

A. perspective

_____ analytics is the set of analytical techniques that yield a course of action A. perspective B. predictive C. data D. descriptive

predictive

____analytics consists of analytical techniques that use models constructed from past data to predict the future or to assess the impact of 1 variable on another

data mining

____is the process of using procedures from statistics and computer science to extract useful info from extremely large databases

variable

a characteristic of interest for the elements is called a(n)_____

Statistical inference

a stat prof. asked students in a class their ages. based on this info, the prof. states that the average age of students in the school is 21. this is an example of _____

data set

all data collect in a study are referred to as the ____

categorical data

in a post office, the mailboxes are numbered 1-50,000, these numbers represent ____

quantitative variable

in a questionnaire, respondents are asked to record their age in years. Age is an example of ___

quantitative data

income is an example of ____

observational studies

statistical studies in which researchers do not control variables of interest are ___

quantitative

the birth weight of newborns, measured in grams, is an example of ____

B. survey

the most common type of observational study is____ A. debate B. survey C. statistical inference D. experiment

statistical inference

the process of analyzing sample data to draw conclusions about the characteristics of a population is called ____

ordinal

when the data are labels or names used to identify an attribute of the elements and the rank of the data is meaningful, the variable has which scale of measurement?

A. the # of people waiting in line

which of the following is an example of quantitative data? A. the # of people waiting in line B. the players # on a baseball uniform C. the serial # on a one-dollar bill D. the part # of an inventory item

C. your age on your last bday

which of the following is not a categorical variable? A. your cell phone area code B. your high school graduation year C. your age on your last bday D. your accounting class start time

D. time

which of the following variables uses the ratio scale of measurement? A. SAT scores B. name of stock exchange C. social security # D. time

c. time

which of the following variables uses the ratio scale of measurement? A. social security B. SAT scores C. time D. name of stock exchange