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Q:
Consider the following frequency distribution:Class IntervalFrequency100-under 200 25200-under 300 45300-under 400 30What is the midpoint of the first class?a) 100b) 150c) 25d) 250e) 200
Q:
Consider the relative frequency distribution given below: Class Interval
Relative Frequency 20-under 40
0.2 40-under 60
0.3 60-under 80
0.4 80-under 100
0.1 There were 60 numbers in the data set. How many of the number were less than 80?
a) 90
b) 80
c) 0.9
d) 54
e) 100
Q:
Consider the relative frequency distribution given below: Class Interval
Relative Frequency 20-under 40
0.2 40-under 60
0.3 60-under 80
0.4 80-under 100
0.1 There were 60 numbers in the data set. How many numbers were in the interval 40-under 60?
a) 30
b) 50
c) 18
d) 12
e) 15
Q:
Consider the relative frequency distribution given below: Class Interval
Relative Frequency 20-under 40
0.2 40-under 60
0.3 60-under 80
0.4 80-under 100
0.1 There were 60 numbers in the data set. How many numbers were in the interval 20-under 40?
a) 12
b) 20
c) 40
d) 10
e) 15
Q:
Abel Alonzo, Director of Human Resources, is exploring employee absenteeism at the Harrison Haulers Plant during the last operating year. A review of all personnel records indicated that absences ranged from zero to twenty-nine days per employee. The following class intervals were proposed for a frequency distribution of absences. Absences
Number of Employees (Days) 0-under 10
- 10-under 20
- 20-under 30
- Which of the following might represent a problem with this set of intervals?
a) There are too few intervals.
b) Some numbers between 0 and 29 would not fall into any interval.
c) The first and second interval overlaps.
d) There are too many intervals.
e) The second and the third interval overlap.
Q:
Abel Alonzo, Director of Human Resources, is exploring employee absenteeism at the Harrison Haulers Plant during the last operating year. A review of all personnel records indicated that absences ranged from zero to twenty-nine days per employee. The following class intervals were proposed for a frequency distribution of absences. Absences
Number of Employees (Days) 0-under 5
- 5-under 10
- 10-under 15
- 20-under 25
- 25-under 30
- Which of the following represents a problem with this set of intervals?
a) There are too few intervals.
b) Some numbers between 0 and 29, inclusively, would not fall into any interval.
c) The first and second interval overlaps.
d) There are too many intervals.
e) The second and the third interval overlap.
Q:
The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school:SalaryNumber of Graduates($1,000s)28-under 31-31-under 35-34-under 37-39-under 340-Before data was collected, someone questioned the validity of this arrangement. Which of the following represents a problem with this set of intervals?a) There are too many intervals.b) The class widths are too small.c) The class widths are too large.d) The second and the third interval overlap.e) There are too few intervals.
Q:
The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school:SalaryNumber of Graduates($1,000s)28-under 31-31-under 35-34-under 37-39-under 40-Before data was collected, someone questioned the validity of this arrangement. Which of the following represents a problem with this set of intervals?a) There are too many intervals.b) The class widths are too small.c) Some numbers between 28,000 and 40,000 would not fall into any of these intervals.d) The first and the second interval overlap.e) There are too few intervals.
Q:
The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school:SalaryNumber of Graduates($1,000s)28-under 31-31-under 35-34-under 37-39-under 40-Before data was collected, someone questioned the validity of this arrangement. Which of the following represents a problem with this set of intervals?a) There are too many intervals.b) The class widths are too small.c) Some numbers between 28,000 and 40,000 would fall into two different intervals.d) The first and the second interval overlap.e) There are too few intervals.
Q:
The cumulative frequency for a class is 27. The cumulative frequency for the next (non-empty) class will be _______.
a) less than 27
b) equal to 27
c) next class frequency minus 27
d) 27 minus the next class frequency
e) 27 plus the next class frequency
Q:
A frequency distribution was developed. The lower endpoint of the first class is 9.30, and the midpoint is 9.35. What is the upper endpoint of this class?
a) 9.50
b) 9.60
c) 9.70
d) 9.40
e) 9.80
Q:
A person has decided to construct a frequency distribution for a set of data containing 60 numbers. The lowest number is 23 and the highest number is 68. If 7 classes are used, the class width should be approximately _______.
a) 5
b) 7
c) 9
d) 11
e) 12
Q:
The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed.Class IntervalFrequency20-under 403040-under 604560-under 808080-under 10045What is the cumulative frequency of the third class?a) 80b) 0.40c) 155d) 75e) 105
Q:
The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed. Class Interval
Frequency 20-under 40
30 40-under 60
45 60-under 80
80 80-under 100
45 What is the relative frequency of the second class?
a) 0.455
b) 0.900
c) 0.225
d) 0.750
e) 0.725
Q:
The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed. Class Interval
Frequency 20-under 40
30 40-under 60
45 60-under 80
80 80-under 100
45 What is the midpoint of the last class?
a) 80
b) 100
c) 95
d) 90
e) 85
Q:
Consider the following frequency distribution: Class Interval
Frequency 10-under 20
15 20-under 30
25 30-under 40
10 What is the cumulative frequency of the second class interval?
a) 25
b) 40
c) 15
d) 50
Q:
Consider the following frequency distribution: Class Interval
Frequency 10-under 20
15 20-under 30
25 30-under 40
10 What is the relative frequency of the first class?
a) 0.15
b) 0.30
c) 0.10
d) 0.20
e) 0.40
Q:
Consider the following frequency distribution: Class Interval
Frequency 10-under 20
15 20-under 30
25 30-under 40
10 What is the midpoint of the first class?
a) 10
b) 20
c) 15
d) 30
e) 40
Q:
A scatter plot is useful for examining the relationship between two numerical variables.
Q:
A scatter plot is a two-dimensional graph plot of data containing pairs of observations on two numerical variables.
Q:
A scatter plot shows how the numbers in a data set are scattered around their average.
Q:
A Pareto chart and a pie chart are both types of qualitative graphs.
Q:
In contrast to quantitative data graphs that are plotted along a numerical scale, qualitative graphs are plotted using non-numerical categories.
Q:
A graphical representation of a frequency distribution is called a pie chart.
Q:
Dot Plots are mainly used to display a large data set.
Q:
In a histogram, the tallest bar represents the class with the highest cumulative frequency.
Q:
For a company in gardening supplies business, the best graphical way to show the percentage of a total budget that is spent on each of a number of different expense categories is the stem and leaf plot.
Q:
One advantage of a stem and leaf plot over a frequency distribution is that the values of the original data are retained.
Q:
A histogram can be described as a type of vertical bar chart.
Q:
A cumulative frequency polygon is also called an ogive.
Q:
An instructor made a frequency table of the scores his students got on a test Score
Frequency 30-under 40
1 40-under 50
4 50-under 60
5 60-under 70
10 70-under 80
20 80-under 90
10 90-under 100
5 Approximately what percent of students got more than 70?
a) 36
b) 20
c) 50
d) 10
e) 64
Q:
An instructor made a frequency table of the scores his students got on a test Score
Frequency 30-under 40
1 40-under 50
4 50-under 60
5 60-under 70
10 70-under 80
20 80-under 90
10 90-under 100
5 The midpoint of the last class interval is _________.
a) 90
b) 5
c) 95
d) 100
e) 50
Q:
One rule that must always be followed in constructing frequency distributions is that the adjacent classes must overlap.
Q:
For any given data set, a frequency distribution with a larger number of classes will always be better than the one with a smaller number of classes.
Q:
The difference between the highest number and the lowest number in a set of data is called the differential frequency.
Q:
A cumulative frequency distribution provides a running total of the frequencies in the classes.
Q:
If the individual class frequency is divided by the total frequency, the result is the median frequency.
Q:
A summary of data in which raw data are grouped into different intervals and the number of items in each group is listed is called a frequency distribution.
Q:
A manager was asked to rate the performance of his employees on a scale of 1 to 6. A 1 means that the performance is awful while a 6 means that it is excellent. The measurement level of this data is _______.
a) interval level data
b) ordinal level data
c) nominal level data
d) ratio level data
e) relative level data
Q:
A business is attempting to find the best small town in the United States in which to relocate. As part of the investigation, the elevations of all small towns in the United States are researched. Some towns are located high in the Rockies with elevations over 8,000 feet. There are even some towns located in the south central valley of California with elevations below sea level. These elevations can best be described as which level of data?
a) Interval level
b) Ordinal level
c) Nominal level
d) Ratio level
e) Relative level
Q:
A marketing survey is conducted to ascertain the potentiality of several new products. A series of focus groups is used to conduct this survey. At the end of one of the sessions, the group members are asked to rank the remaining eight products in order of desirability. A one indicates the most favored product and an eight is awarded to the least desirable. These numbers are examples of which level of data?
a) Interval level
b) Ordinal level
c) Nominal level
d) Ratio level
e) Relative level
Q:
A marketing demographic survey is undertaken to determine the market potential for a new product. One of the questions asked is: What type of residence do you live in? Respondents are offered several possible answers including: house, apartment, or condominiums. In order to computerize the survey answers, the responses are coded as a 1 if the answer is "house", a 2 if the answer is an "apartment", and a 3 if the answer is a "condominium". These numbers, 1, 2, and 3, are examples of which level of data?
a) Interval level
b) Ordinal level
c) Nominal level
d) Ratio level
e) Relative level
Q:
A large manufacturing company in Indianapolis produces valves for the chemical industry.
According to specifications, one particular valve is supposed to have a five-inch opening on the side. Quality control inspectors take random samples of these valves just after the hole is bored.
They measure the size of the hole in an effort to determine if the machine is out"‘of"‘adjustment.
The measurement of the diameter of the hole represents which level of data?
a) Interval level
b) Ordinal level
c) Nominal level
d) Central level
e) Ratio level
Q:
During the Valentine's season, different offices in a company are encouraged to decorate their doors. A committee then goes around and ranks the doors according to how well the doors are decorated. The best door gets a ranking of "1"; the second best gets a ranking of "2", etc. The numbers of these rankings represent which level of data?
a) Interval level
b) Ordinal level
c) Nominal level
d) Ratio level
e) Relative level
Q:
How much inventory do Christmas tree sales lots keep? A researcher goes from location to location around the city counting the number of trees in each lot. These numbers most likely represent what level of data?
a) Interval level
b) Ordinal level
c) Nominal level
d) Ratio level
e) Relative level
Q:
Which types of data are normally used with nonparametric statistics?
a) Interval or ratio level data
b) Ordinal or nominal level data
c) Nominal or ratio level data
d) Ratio or ordinal level data
e) Relative or ratio level data
Q:
Which types of data are normally used in parametric statistics?
a) Interval or ratio level data
b) Ordinal or nominal level data
c) Nominal or ratio level data
d) Ratio or ordinal level data
e) Relative or ratio level data
Q:
Scholastic Aptitude Test scores are an example of what type of measurement scale?
a) Interval level data
b) Ordinal level data
c) Nominal level data
d) Ratio level data
e) Relative level data
Q:
If it were not for the existence of an "absolute zero," ratio data would be considered the same as _______.
a) interval level data
b) ordinal level data
c) nominal level data
d) ratio level data
e) relative level data
Q:
Grades on a test range from 0 to 100. This level of data is _______.
a) interval level data
b) ordinal level data
c) nominal level data
d) ratio level data
e) relative level data
Q:
Sales of a restaurant (in dollars) are an example of what level of data measurement?
a) Interval level data
b) Ordinal level data
c) Nominal level data
d) Ratio level data
e) Relative level data
Q:
The social security number of employees would be an example of what level of data measurement?
a) Interval level data
b) Ordinal level data
c) Nominal level data
d) Ratio level data
e) Relative level data
Q:
A market research analyst has asked consumers to rate the appearance of a new package on a scale of 1 to 5. A 1 means that the appearance is awful while a 5 means that it is excellent. The measurement level of this data is _______.
a) interval level data
b) ordinal level data
c) nominal level data
d) ratio level data
e) relative level data
Q:
Members of the accounting department's clerical staff were asked to rate their supervisor's leadership style as either (1) authoritarian or (2) participatory. This is an example of _______ .
a) interval level data
b) ordinal level data
c) nominal level data
d) ratio level data
e) relative level data
Q:
A person has decided to code a particular set of sales data. A value of 0 is assigned if the sales occurred on a weekday, and a value of 1 means it happened on a weekend. This is an example of _______.
a) interval level data
b) ordinal level data
c) nominal level data
d) ratio level data
e) relative level data
Q:
A level of data measurement that has an absolute zero is called _______.
a) interval level
b) ordinal level
c) nominal level
d) ratio level
e) relative level
Q:
Morningstar Mutual Funds analyzes the risk and performance of mutual funds. Each mutual fund is assigned an overall rating of one to five stars. One star is the lowest rating, and five stars is the highest rating. This level of measurement is __________.
a) ordinal level
b) interval level
c) nominal level
d) ratio level
e) relative level
Q:
A consumer has been asked to rank five cars based upon their desirability. This level of measurement is _______.
a) interval level
b) ordinal level
c) nominal level
d) ratio level
e) relative level
Q:
Sue Taylor, Director of Global Industrial Sales, is concerned by a deteriorating sales trend.
Specifically, the number of customers is stable at 1,500, but they are purchasing less each year.
She orders her staff to search for causes of the downward trend by surveying all 1,500 industrial customers. One question on the survey asked the customers: "How many people does your company employ? The measurement level for this question is __________.
a) interval level
b) ordinal level
c) nominal level
d) relative level
e) ratio level
Q:
Which of the following operations is meaningful for processing ordinal data, but is meaningless for processing nominal data?
a) Addition
b) Multiplication
c) Ranking
d) Counting
e) Division
Q:
A question in a survey of microcomputer users asked: "Which operating system do you use most often: a. Apple OS 7, b. MS DOS, c. MS Windows 95, d. UNIX." The measurement level for this question is _________________.
a) nominal level
b) ordinal level
c) interval level
d) ratio level
e) relative level
Q:
Sue Taylor, Director of Global Industrial Sales, is concerned by a deteriorating sales trend.
Specifically, the number of customers is stable at 1,500, but they are purchasing less each year.
She orders her staff to search for causes of the downward trend by surveying all 1,500 industrial customers. One question on the survey asked the customers: "Which of the following best describes your primary business: a. manufacturing, b. wholesaler, c. retail, d. service." The measurement level for this question is _________________.
a) interval level
b) ordinal level
c) nominal level
d) ratio level
e) relative level
Q:
Which scale of measurement has these two properties: linear distance is meaningful and the location of origin (or zero point) is absolute (or natural)?
a) Interval level
b) Ordinal level
c) Nominal level
d) Ratio level
e) Relative level
Q:
Which scale of measurement has these two properties: linear distance is meaningful and the location of origin (or zero point) is arbitrary?
a) Interval level
b) Ordinal level
c) Nominal level
d) Ratio level
e) Minimal level
Q:
Which of the following operations is meaningful for processing nominal data?
a) Addition
b) Multiplication
c) Ranking
d) Counting
e) Division
Q:
The lowest level of data measurement is _______.
a) interval level
b) ordinal level
c) nominal level
d) ratio level
e) minimal level
Q:
Which of the following statements is correct?
a) Business researchers rarely give attention to collecting meaningful data.
b) Variables are data that can be directly used for decision making.
c) Valid data are the lifeblood of business statistics.
d) Measurements never need to be defined by the business researcher.
e) Business statistics are extremely complex and hard to use for decision making.
Q:
Which of the following measurement processes is least likely to yield usable data?
a) Counting the number of shoppers entering the department store between 12 pm and 2 pm.
b) Studying cell phone bills and recording the number of text messages sent per month.
c) Performing a consumer survey of preferences in fast food chains
d) Asking students to list three things that are important to them.
e) Calculating the percent of college students who work at least 20 hours while attending school.
Q:
Which of the following is not a random variable when flipping a coin?
a) Assigning 1 when Tail and 0 when Head
b) Assigning 0 when Head and 1 when Tail
c) The list of outcomes Head and Tail
d) The number of Heads
e) Assigning 1 when Tail or Head
Q:
A researcher wants to know what the average variation is in altimeters of small, privately owned airplanes. The task of determining this is expensive and time consuming, if even possible, given the large number of such airplanes. The researcher decides to use government records to randomly locate the owners of ten such planes and then get permission to test the altimeters. When the researcher is done, he will use the data gathered from the group of ten to reach conclusions about all small, privately owned airplanes. The average variation computed using the data gathered on the group of ten airplanes is best described as a _______.
a) measurement
b) data
c) statistic
d) parameter.
e) census
Q:
A researcher wants to know what the average variation is in altimeters of small, privately owned airplanes. The task of determining this is expensive and time consuming, if even possible, given the large number of such airplanes. The researcher decides to use government records to randomly locate the owners of ten such planes and then get permission to test the altimeters. When the researcher is done, he will use the data gathered from the group of ten to reach conclusions about all small, privately owned airplanes. This process can best be described as _______.
a) data statistics
b) research statistics
c) descriptive statistics
d) inferential statistics
e) nonparametric statistics
Q:
What proportion of San Diego's registered voters favor trade restrictions with China? In an effort to determine this, a research team calls every registered voter in San Diego and contacts them. The proportion determined from the data gathered is a _______.
a) parameter
b) sample
c) population
d) statistic
e) frame
Q:
The Chamber of Commerce wants to assess its membership's opinions of the North American Free Trade Agreement. One-hundred of the 2,000 members are randomly selected and contacted by telephone. Seventy-five reported an overall favorable opinion, and twenty-five reported an overall unfavorable opinion. The proportion, 0.75, is a ___________.
a) parameter
b) statistic
c) population
d) sample
e) frame
Q:
The Magnolia Swimming Pool Company wants to determine the average number of years it takes before a major repair is required on one of the pools that the company constructs. The president of the company asks Rick Johnson, a company accountant, to randomly contact fifty families that built Magnolia pools in the past ten years and determine how long it was in each case until a major repair. The information will then be used to estimate the average number of years until a major repair for all pools sold by Magnolia. The average based on the data gathered from the fifty families can best be described as a _______.
a) parameter
b) sample
c) population
d) statistic
e) frame
Q:
The Universal Pulp Company has a plant in Portland, Oregon. Management wants to determine the average number of sick days taken per worker in this plant in 2012. To do this, the management gathers records on all the workers in the plant and averages the number of sick days taken in 2012 by each worker. This process is using _______.
a) nonparametric statistics
b) nominal data
c) descriptive statistics
d) inferential statistics
e) a census
Q:
A market researcher is interested in determining the average income for families in Duval County, Florida. To accomplish this, she takes a random sample of 400 families from the county and uses the data gathered from them to estimate the average income for families of the entire county. This process is an example of _______.
a) nonparametric statistics
b) nominal data
c) descriptive statistics
d) inferential statistics
e) census
Q:
A new sales person is paid a commission on each sale. This person made $2,000 his first month on the job. From this he concludes that he will make $24,000 during his first year. This is an example of _______.
a) inferential statistics
b) nominal data
c) descriptive statistics
d) deferential statistics
e) nonparametric statistics
Q:
On discovering an improperly adjusted drill press, Jack Joyner, Director of Quality
Control, ordered an inspection of every fifth casting drilled during the evening shift. Less than 1% of the castings were defective; so, Jack released the evening shift's production to assembly. This is an example of _______________.
a) nonparametric statistics
b) nominal data
c) descriptive statistics
d) inferential statistics
e) judgmental statistics
Q:
Jessica Salas, president of Salas Products, is reviewing the warranty policy for her company's new model of automobile batteries. Life tests performed on a sample of 100 batteries indicated an average life of seven years under normal usage. Jessica recommended a six-year warranty period for the new model. This is an example of _____________.
a) descriptive statistics
b) executive forecasting
c) population derivation
d) sample persuasion
e) inferential statistics
Q:
A student makes an 82 on the first test in a statistics course. From this, she estimates that her average at the end of the semester (after other tests) will be about 82. This is an example of ___.
a) descriptive statistics
b) inferential statistics
c) population derivation
d) sample persuasion
e) relative level data