BUS 226 - Final Part 1

A survey of 400 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. Undergraduate Major Graduate School Business Engineering Others Total Yes 35 42 63 140 No 91 104 65 260 Total 126 146 128 400 Refer to Exhibit 2-4. Among the students who plan to go to graduate school, what percentage indicated "Other" majors? a. 45 b. 54 c. 35 d. 15.75

a. 45

Data collected at the same, or approximately the same, point in time are a. time series data b. static data c. cross-sectional data d. one-dimensional data

c. cross-sectional data

A tabular method that can be used to summarize the data on two variables simultaneously is called a. a crosstabulation b. a histogram c. simultaneous equations d. a dot plot

a. a crosstabulation

The relative frequency of a class is computed by a. dividing the frequency of the class by the sample size. b. dividing the sample size by the frequency of the class. c. dividing the frequency of the class by the midpoint. d. dividing the midpoint of the class by the sample size.

a. dividing the frequency of the class by the sample size.

In a questionnaire, respondents are asked to record their age in years. Age is an example of a a. quantitative variable b. categorical or quantitative variable, depending on how the respondents answered the question c. ratio variable d. categorical variable

a. quantitative variable

The sum of frequencies for all classes will always equal a. the number of elements in a data set b. 1 c. the number of classes d. a value between 0 and 1

a. the number of elements in a data set

Exhibit 2-4 A survey of 400 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. Undergraduate Major Graduate School Business Engineering Others Total Yes 35 42 63 140 No 91 104 65 260 Total 126 146 128 400 Refer to Exhibit 2-4. Of those students who are majoring in business, what percentage plans to go to graduate school? a. 70 b. 27.78 c. 8.75 d. 72.22

b. 27.78

A survey of 400 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. Undergraduate Major Graduate School Business Engineering Others Total Yes 35 42 63 140 No 91 104 65 260 Total 126 146 128 400 Refer to Exhibit 2-4. What percentage of the students does not plan to go to graduate school? a. 280 b. 65 c. 32 d. 520

b. 65

A frequency distribution is a. a tabular summary of a set of data showing the fraction of items in each of several non-overlapping classes b. a tabular summary of a set of data showing the number of items in each of several nonoverlapping classes c. a graphical device for presenting categorical data d. a graphical form of representing data

b. a tabular summary of a set of data showing the number of items in each of several non-overlapping classes

Quantitative data a. may be either numeric or nonnumeric b. are always numeric c. are always nonnumeric d. are always labels

b. are always numeric

Fifteen percent of the students in a School of Business Administration are majoring in Economics, 20% in Finance, 35% in Management, and 30% in Accounting. The graphical device(s) that can be used to present these data is (are) a. a line graph b. both a bar chart and a pie chart c. only a bar chart d. only a pie chart

b. both a bar chart and a pie chart

In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of a a. categorical or quantitative variable, depending on how the respondents answered the question b. categorical variable c. ratio variable d. quantitative variable

b. categorical variable

The summaries of data, which may be tabular, graphical, or numerical, are referred to as a. report generation b. descriptive statistics c. inferential statistics d. statistical inference

b. descriptive statistics

Categorical data a. are always numeric b. may be either numeric or nonnumeric c. are always nonnumeric d. indicate either how much or how many

b. may be either numeric or nonnumeric

The percent frequency of a class is computed by a. dividing the relative frequency by 100 b. multiplying the relative frequency by 100 c. multiplying the relative frequency by 10 d. adding 100 to the relative frequency

b. multiplying the relative frequency by 100

The set of measurements collected for a particular element is (are) called a. variables b. observations c. census d. samples

b. observations

The sum of the relative frequencies for all classes will always equal a. the sample size b. one c. 100 d. the number of classes

b. one

A tabular summary of data showing the percentage of items in each of several nonoverlapping classes is a a. relative frequency distribution b. percent frequency distribution c. cumulative percent frequency distribution d. frequency distribution

b. percent frequency distribution

A graphical device for presenting categorical data summaries based on subdivision of a circle into sectors that correspond to the relative frequency for each class is a a. bar chart b. pie chart c. stem-and-leaf display d. histogram

b. pie chart

A portion of the population selected to represent the population is called a. a census b. a sample c. descriptive statistics d. statistical inference

b. sample

Which of the following is an example of categorical data? a. height, in meters, of a diving board b. social security number c. number of square feet of carpet d. score on a multiple-choice exam

b. social security number

Data collected over several time periods are a. time controlled data b. time series data c. time-dependent data d. cross-sectional data

b. times series data

A sample of five Fortune 500 companies showed the following industry codes: banking, banking, finance, retail, and banking. Based on this information, which of the following statements is correct? a. Banking is the most common type of industry among all Fortune 500 companies. b. Sixty percent of all Fortune 500 companies are banking industries. c. Sixty percent of the sample of five companies are banking industries. d. If five other Fortune 500 companies were chosen, 60% of them would be banking industries.

c. Sixty percent of the sample of five companies are banking industries

A graphical presentation of the relationship between two quantitative variables is a. a histogram b. a crosstabulation c. a scatter diagram d. a pie chart

c. a scatter diagram

In a sample of 800 students in a university, 360, or 45%, live in the dormitories. The 45% is an example of a. statistical inference b. a population c. descriptive statistics d. a sample

c. descriptive statistics

The numbers of hours worked (per week) by 400 statistics students are shown below. Number of hours Frequency 0 − 9 20 10 − 19 80 20 − 29 200 30 − 39 100 Refer to Exhibit 2-1. The cumulative relative frequency for the class of 20 − 29 a. is 300 b. is 0.25 c. is 0.75 d. is 0.5

c. is 0.75

The numbers of hours worked (per week) by 400 statistics students are shown below. Number of hours Frequency 0 − 9 20 10 − 19 80 20 − 29 200 30 − 39 100 Refer to Exhibit 2-1. The number of students working 19 hours or less a. is 80 b. is 180 c. is 100 d. is 300

c. is 100

Six hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. The six hundred residents in this study is an example of a(n) a. census b. observation c. sample d. population

c. sample

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 21 years. This is an example of a. an experiment b. a census c. statistical inference d. descriptive statistics

c. statistical inference

A characteristic of interest for the elements is called a(n) a. observation b. data set c. variable d. sample

c. variable

The numbers of hours worked (per week) by 400 statistics students are shown below. Number of hours Frequency 0 − 9 20 10 − 19 80 20 − 29 200 30 − 39 100 Refer to Exhibit 2-1. The relative frequency of students working 9 hours or less a. is 0.95 b. is 100 c. is 20 d. 0.05

d. 0.05

Information on the type of industry is provided for a sample of 50 Fortune 500 companies. Industry Type Frequency Banking 7 Consumer Products 15 Electronics 10 Retail 18 Refer to Exhibit 2-2. The relative frequency of industries that are classified as banking is a. 0.70 b. 0.07 c. 7 d. 0.14

d. 0.14

Exhibit 2-4 A survey of 400 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. Undergraduate Major Graduate School Business Engineering Others Total Yes 35 42 63 140 No 91 104 65 260 Total 126 146 128 400 Refer to Exhibit 2-4. What percentage of the students' undergraduate major is engineering? a. 65 b. 292 c. 520 d. 36.5

d. 36.5

Facts and figures that are collected, analyzed and summarized for presentation and interpretation are a. elements b. variables c. Both variables and elements are correct. d. data

d. data

The entities on which data are collected are a. sets b. samples c. populations d. elements

d. elements

A graphical presentation of a frequency distribution, relative frequency distribution, or percent frequency distribution of quantitative data constructed by placing the class intervals on the horizontal axis and the frequencies on the vertical axis is a a. stem-and-leaf display b. pie chart c. bar chart d. histogram

d. histogram

Statistical inference a. is the same as a census b. is the same as descriptive statistics c. refers to the process of drawing inferences about the sample based on the characteristics of the population d. is the process of drawing inferences about the population based on the information taken from the sample

d. is the process of drawing inferences about the population based on the information taken from the sample

A tabular summary of a set of data showing the fraction of the total number of items in several nonoverlapping classes is a a. frequency. b. cumulative frequency distribution. c. frequency distribution. d. relative frequency distribution.

d. relative frequency distribution.

The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called a. descriptive statistics b. data analysis c. data summarization d. statistical inference

d. statistical inference

Which of the following is an example of quantitative data? a. the part number of an inventory item b. the player's number on a baseball uniform c. the serial number on a one-dollar bill d. the number of people in a waiting line

d. the number of people in a waiting line