1、in a questionnaire, respondents are asked to mark their gender as male or female. gender is an example of the（ ） a、ordinal scale b、nominal scale c、ratio scale d、interval scale
2、in a questionnaire, respondents are asked to mark their gender as male or female. gender is an example of the（ ） a、ordinal scale b、nominal scale c、ratio scale d、interval scale
3、the nominal scale of measurement has the properties of the（ ）. a、ordinal scale b、only interval scale c、ratio scale d、none of these alternatives is correct.
4、the scale of measurement that is used to rank order the observation for a variable is called the（ ）. a、ratio scale b、ordinal scale c、nominal scale d、interval scale
5、some hotels ask their guests to rate the hotel's services as excellent, very good, good, and poor. this is an example of the（ ）. a、ordinal scale b、ratio scale c、nominal scale d、interval scale
6、the ordinal scale of measurement has the properties of the（ ）. a、ratio scale b、interval scale c、nominal scale d、ratio and interval scales
7、the ratio scale of measurement has the properties of（ ）. a、only the ordinal scale b、only the nominal scale c、the rank scale d、the interval scale
8、the interval scale of measurement has the properties of the（ ）. a、ratio and nominal scales b、ratio and ordinal scales c、ratio scale d、none of these alternatives is correct.
9、data obtained from a nominal scale（ ）. a、must be alphabetic b、can be either numeric or nonnumeric c、must be numeric d、must rank order the data
10、the scale of measurement that has an inherent zero value defined is the（ ）. a、ratio scale b、nominal scale c、ordinal scale d、interval scale
11、quantitative data refers to data obtained with a(n)（ ）. a、ordinal scale b、nominal scale c、either interval or ratio scale d、only interval scale
12、the entities on which data are collected are（ ）. a、elements b、populations c、samples d、none of these alternatives is correct.
13、the set of measurements collected for a particular element is (are) called（ ）. a、variables b、observations c、samples d、none of these alternatives is correct.
14、a characteristic of interest for the elements is called a(n)（ ）. a、sample b、data set c、variable d、none of these alternatives is correct.
15、all the data collected in a particular study are referred to as the（ ）. a、inference b、variable c、data set d、none of these alternatives is correct.
16、another name for "observations" is（ ）. a、views b、variables c、cases d、none of these alternatives is correct.
17、quantitative data（ ）. a、are always nonnumeric b、may be either numeric or nonnumeric c、are always numeric d、none of these alternatives is correct.
18、ordinary arithmetic operations are meaningful（ ）. a、only with categorical data b、only with quantitative data c、either with quantitative or categorical data d、none of these alternatives is correct.
19、social security numbers consist of numeric values. therefore, social security is an example of（ ）. a、a quantitative variable b、either a quantitative or a categorical variable c、an exchange variable d、a categorical variable
20、for ease of data entry into a university database, 1 denotes that the student is an undergraduate and 2 indicates that the student is a graduate student. in this case data are（ ）. a、categorical b、quantitative c、either categorical or quantitative d、neither categorical nor quantitative
21、data collected at the same, or approximately the same, point in time are（ ）. a、time series data b、approximate time series data c、crossectional data d、approximate data
22、data collected over several time periods are（ ）. a、time series data b、time controlled data c、crossectional data d、time crossectional data
23、the summaries of data, which may be tabular, graphical, or numerical, are referred to as（ ）. a、inferential statistics b、descriptive statistics c、statistical inference d、report generation
24、statistical inference（ ）. a、refers to the process of drawing inferences about the sample based on the characteristics of the population b、is the same as descriptive statistics c、is the process of drawing inferences about the population based on the information taken from the sample d、is the same as a census
25、the collection of all elements of interest in a particular study is（ ）. a、the population b、the sampling c、statistical inference d、descriptive statistics
26、a portion of the population selected to represent the population is called（ ）. a、statistical inference b、descriptive statistics c、a census d、a sample
27、in a sample of 800 students in a university, 240, or 30%, are business majors. the 30% is an example of（ ）. a、a sample b、a population c、statistical inference d、descriptive statistics
28、in a sample of 400 students in a university, 80, or 20%, are business majors. based on the above information, the school's paper reported that "20% of all the students at the university are business majors." this report is an example of（ ）. a、a sample b、a population c、statistical inference d、descriptive statistics
29、five hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. the five hundred residents in this study is an example of a(n)（ ）. a、census b、sample c、observation d、population
30、a statistics professor asked students in a class their ages. on the basis of this information, the professor states that the average age of all the students in the university is 24 years. this is an example of（ ）. a、a census b、descriptive statistics c、an experiment d、statistical inference
31、the owner of a factory regularly requests a graphical summary of all employees' salaries. the graphical summary of salaries is an example of（ ）. a、a sample b、descriptive statistics c、statistical inference d、an experiment
32、the department of transportation of a city has noted that on the average there are 17 accidents per day. the average number of accidents is an example of（ ）. a、descriptive statistics b、statistical inference c、a sample d、a population
33、the process of analyzing sample data in order to draw conclusions about the characteristics of a population is called（ ）. a、descriptive statistics b、statistical inference c、data analysis d、data summarization
34、in a post office, the mailboxes are numbered from 1 to 4,500. these numbers represent（ ）. a、categorical data b、quantitative data c、either categorical or quantitative data d、since the numbers are sequential, the data is quantitative
35、the average age in a sample of 190 students at city college is 22. as a result of this sample, it can be concluded that the average age of all the students at city college（ ）. a、must be more than 22, since the population is always larger than the sample b、must be less than 22, since the sample is only a part of the population c、could not be 22 d、could be larger, smaller, or equal to 22
36、since a sample is a subset of the population, the sample mean（ ）. a、is always smaller than the mean of the population b、is always larger than the mean of the population c、must be equal to the mean of the population d、can be larger, smaller, or equal to the mean of the population
37、the scale of measurement that is simply a label for the purpose of identifying the attribute of an element is the（ ）. a、ratio scale b、nominal scale c、ordinal scale d、interval scale
38、which scale of measurement can be either numeric or nonnumeric? a、nominal b、ratio c、interval d、none of these alternatives is correct.
39、which of the following variables use the ratio scale of measurement? a、social security number b、temperature c、gender d、income
40、the weight of a candy bar in ounces is an example of（ ）. a、categorical data b、either categorical or quantitative data c、weight data d、quantitative data
41、the height of a building, measured in feet, is an example of（ ）. a、categorical data b、either categorical or quantitative data c、feet data d、quantitative data
42、census refers to（ ）. a、an experimental study to collect data on the entire population b、an experimental study to collect data on a sample c、a survey to collect data on a sample d、a survey to collect data on the entire population
43、in experimental studies, the variable of interest（ ）. a、is not controlled b、is controlled c、must be numerical d、cannot be numerical
44、in observational studies, the variable of interest（ ）. a、is not controlled b、is controlled c、must be numerical d、cannot be numerical
45、how many scales of measurement exist? a、1 b、2 c、3 d、4
46、which of the following can be classified as quantitative data? a、interval and ordinal b、ratio and ordinal c、nominal and ordinal d、interval and ratio
47、the sample size（ ）. a、can be larger than the population size b、is always smaller than the population size c、can be larger or smaller than the population size d、is always equal to the size of the population
48、a population is（ ）. a、the same as a sample b、the selection of a random sample c、the collection of all items of interest in a particular study d、always the same size as the sample
49、on a street, the houses are numbered from 300 to 450. the house numbers are examples of（ ）. a、categorical data b、quantitative data c、both quantitative and categorical data d、neither quantatative nor categorical data
50、a survey to collect data on the entire population is（ ）. a、a census b、a sample c、a population d、an inference
51、in a questionnaire, respondents are asked to mark their gender as male or female. gender is an （ ）. a、ordinal scale b、nominal scale c、categorical variable d、quantitative variable e、none of these alternatives is correct.
52、arithmetic operations are appropriate for（ ） a、the ratio scale b、the interval scale c、categorical data d、quantitative data e、none of these alternatives is correct.
53、income is an example of（ ） a、a variable that uses the ratio scale b、a variable that uses interval scale c、categorical data d、quantitative data e、none of these alternatives is correct.
54、categorical data（ ） a、indicate either how much or how many b、must be nonnumeric c、may be either numeric or nonnumeric d、are labels used to identify attributes of elements e、none of these alternatives is correct.
55、temperature is an example of （ ） a、either a quantitative or categorical variable b、a quantitative variable c、a variable that uses the interval scale d、a variable that uses either the ratio or the interval scale e、none of these alternatives is correct.
56、which of the following is not a scale of measurement? a、ratio b、interval c、primal d、divisional e、remedial
57、which of the following can be classified as quantitative data? a、the height of a building, measured in feet. b、the weight of a candy bar in ounces. c、income in dollars. d、social security numbers. e、none of these alternatives is correct.
58、which of the following variables use the interval scale of measurement? a、social security number b、temperature c、height d、income e、latitude
59、which scale of measurement can be either numeric or nonnumeric? a、nominal b、ratio c、interval d、ordinal e、none of these alternatives is correct
60、quantitative data may be either numeric or nonnumeric.
61、in experimental studies, the variable of interest is controlled.
62、a portion of the population selected to represent the population is called a census.
63、arithmetic operations are inappropriate for either categorical or quantitative data.
64、ordinary arithmetic operations are meaningful either with quantitative or categorical data.
65、another name for "observations" is cases.
chapter 2 descriptive statistics：summarizing data using tabular and graphical techniques
quizzes 2
1、the collection of all elements of interest in a particular study is（ ）. a、the population b、the sampling c、statistical inference d、descriptive statistics
2、a portion of the population selected to represent the population is called（ ）. a、statistical inference b、descriptive statistics c、a census d、a sample
3、in a sample of 800 students in a university, 240, or 30%, are business majors. the 30% is an example of（ ）. a、a sample b、a population c、statistical inference d、descriptive statistics
4、in a sample of 400 students in a university, 80, or 20%, are business majors. based on the above information, the school's paper reported that "20% of all the students at the university are business majors." this report is an example of（ ）. a、a sample b、a population c、statistical inference d、descriptive statistics
5、five hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. the five hundred residents in this study is an example of a(n)（ ）. a、census b、sample c、observation d、population
6、a statistics professor asked students in a class their ages. on the basis of this information, the professor states that the average age of all the students in the university is 24 years. this is an example of（ ）. a、a census b、descriptive statistics c、an experiment d、statistical inference
7、the owner of a factory regularly requests a graphical summary of all employees' salaries. the graphical summary of salaries is an example of（ ）. a、a sample b、descriptive statistics c、statistical inference d、an experiment
8、the department of transportation of a city has noted that on the average there are 17 accidents per day. the average number of accidents is an example of（ ）. a、descriptive statistics b、statistical inference c、a sample d、a population
9、the process of analyzing sample data in order to draw conclusions about the characteristics of a population is called（ ）. a、descriptive statistics b、statistical inference c、data analysis d、data summarization
10、in a post office, the mailboxes are numbered from 1 to 4,500. these numbers represent（ ）. a、categorical data b、quantitative data c、either categorical or quantitative data d、since the numbers are sequential, the data is quantitative
11、the average age in a sample of 190 students at city college is 22. as a result of this sample, it can be concluded that the average age of all the students at city college（ ）. a、must be more than 22, since the population is always larger than the sample b、must be less than 22, since the sample is only a part of the population c、could not be 22 d、could be larger, smaller, or equal to 22
12、since a sample is a subset of the population, the sample mean（ ）. a、is always smaller than the mean of the population b、is always larger than the mean of the population c、must be equal to the mean of the population d、can be larger, smaller, or equal to the mean of the population
13、the scale of measurement that is simply a label for the purpose of identifying the attribute of an element is the（ ）. a、ratio scale b、nominal scale c、ordinal scale d、interval scale
14、which scale of measurement can be either numeric or nonnumeric? a、nominal b、ratio c、interval d、none of these alternatives is correct.
15、which of the following variables use the ratio scale of measurement? a、social security number b、temperature c、gender d、income
16、the weight of a candy bar in ounces is an example of（ ）. a、categorical data b、either categorical or quantitative data c、weight data d、quantitative data
17、the height of a building, measured in feet, is an example of（ ）. a、categorical data b、either categorical or quantitative data c、feet data d、quantitative data
18、census refers to（ ）. a、an experimental study to collect data on the entire population b、an experimental study to collect data on a sample c、a survey to collect data on a sample d、a survey to collect data on the entire population
19、in experimental studies, the variable of interest（ ）. a、is not controlled b、is controlled c、must be numerical d、cannot be numerical
20、in observational studies, the variable of interest（ ）. a、is not controlled b、is controlled c、must be numerical d、cannot be numerical
21、how many scales of measurement exist? a、1 b、2 c、3 d、4
22、which of the following can be classified as quantitative data? a、interval and ordinal b、ratio and ordinal c、nominal and ordinal d、interval and ratio
23、the sample size（ ）. a、can be larger than the population size b、is always smaller than the population size c、can be larger or smaller than the population size d、is always equal to the size of the population
24、a population is（ ）. a、the same as a sample b、the selection of a random sample c、the collection of all items of interest in a particular study d、always the same size as the sample
25、on a street, the houses are numbered from 300 to 450. the house numbers are examples of（ ）. a、categorical data b、quantitative data c、both quantitative and categorical data d、neither quantatative nor categorical data
26、a survey to collect data on the entire population is（ ）. a、a census b、a sample c、a population d、an inference
27、temperature is an example of （ ） a、either a quantitative or categorical variable b、a quantitative variable c、a variable that uses the interval scale d、a variable that uses either the ratio or the interval scale e、none of these alternatives is correct.
28、which of the following is not a scale of measurement? a、ratio b、interval c、primal d、divisional e、remedial
29、categorical data（ ） a、indicate either how much or how many b、must be nonnumeric c、may be either numeric or nonnumeric d、are labels used to identify attributes of elements e、none of these alternatives is correct.