03 Oct Global Industrial Sales
1. The complete collection of all entities under study is called the __________.
A. sample
B. parameter
C. statistic
D. population
2. A portion (subset) of the entities under study is called the __________.
A. parameter
B. sample
C. population
D. statistic
3. Claudia Taylor, Director of Global Industrial Sales in Melbourne, is concerned by a deteriorating sales trend. Specifically, the number of customers is stable at 1500 but they are purchasing less each year. She orders her staff to search for causes of the downward trend by surveying all 1500 industrial customers. For this study, the set of 1500 industrial customers is a
________________.
A. statistic
B. sample
C. population
D. parameter
4. When a person collects information from the entire population, this is called a _____________.
A. sample
B. census
C. statistic
D. parameter
5. Claudia Taylor, Director of Global Industrial Sales in Melbourne, is concerned by a deteriorating sales trend. Specifically, the number of customers is stable at 1500 but they are purchasing less each year. She orders her staff to search for causes of the downward trend by selecting a focus group of 40 industrial customers. Sue is ordering a ___________________.
A. statistic from the industrial customers
B. census of the industrial customers
C. sorting of the industrial customers
D. sample of the industrial customers
6. Claudia Taylor, Director of Global Industrial Sales in Melbourne, is concerned by a deteriorating sales trend. Specifically, the number of customers is stable at 1500 but they are purchasing less each year. She orders her staff to search for causes of the downward trend by surveying all 1500 industrial customers. One question on the survey asked the customers to rate ‘Merchandise is delivered on time’ on a scale of 1 to 5, with 1 meaning ‘never’ and 5 meaning ‘always’. The average response of the 1500 customers to this question is a ________________.
A. parameter
B. population
C. sample
D. statistic
7. Claudia Taylor, Director of Global Industrial Sales in Melbourne, is concerned by a deteriorating sales trend. Specifically, the number of customers is stable at 1500 but they are purchasing less each year. She orders her staff to search for causes of the downward trend by selecting a focus group of 40 industrial customers. One question asked the focus group customers to rate ‘Merchandise is delivered on time’ on a scale of 1 to 5, with 1 meaning ‘never’ and 5 meaning ‘always’. The average response of the 40 customers to this question is a
________________.
A. parameter
B. population
C. sample
D. statistic
29. Which of the following operations is meaningful for processing nominal data?
A. addition
B. multiplication
C. ranking
D. counting
8. Claudia Taylor, Director of Global Industrial Sales in Melbourne, is concerned by a deteriorating sales trend. Specifically, the number of customers is stable at 1500 but they are purchasing less each year. She orders her staff to search for causes of the downward trend by surveying all 1500 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. nominal level
B. ordinal level
C. interval level
D. ratio level
9. 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
10. A consumer has been asked to rank five cars based upon their desirability. This level of measurement is ___________________.
A. nominal
B. ratio
C. ordinal
D. interval
11. A level of data measurement that has an absolute zero is called ____________.
A. nominal
B. ordinal
C. interval
D. ratio
12. Upon discovering an improperly adjusted drill press, Jack Joyner, Director of Quality Control, ordered an inspection of ‘every fifth casting drilled on 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
13. The unemployment rate is often used as an indicator of a community’s economic vitality. An unemployment rate is best described as what level of measurement?
A. nominal
B. ordinal
C. interval
D. ratio
14. A graphical representation of a frequency distribution is called a ___________.
A. stem and leaf plot
B. ogive
C. histogram
D. pie chart
15. Which of the following is best to show the percentage of a total budget that is spent on each category of items?
A. histogram
B. ogive
C. stem and leaf chart
D. pie chart
16. 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
17. 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 approximate range of this data?
A. 0.45
B. 0.90
C. 0.225
18. The cumulative frequency for a class is 27. The cumulative frequency for the nest (non-empty) class will be __________.
A. less than 27
B. equal to 27
C. greater than 27
D. 27 minus the next calss frequency
19. Consider the following frequency distribution given below:
Class Interval
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
20. The lowest appropriate level of measurement for the mean is _________.
A. nominal
B. ordinal
C. interval
D. ratio
21. The average of the squared deviations from the arithmetic mean is called the _________.
A. standard deviation
B. mean absolute deviation
C. variance
D. coefficient of variation
22. The empirical rule says that approximately what percentage of the values would be within 2 standard deviations of the mean in a bell shaped set of data?
A. 95%
B. 68%
C. 50%
D. almost all
23. A statistics student made the following grades on 5 tests: 84, 78, 88, 78 and 72. What is the mean grade?
A. 78
B. 80
C. 72
D. 84
24. A commuter travels many kilometres to work each morning. She has timed this trip 5 times during the last month. The time (in minutes) required to make this trip was 34, 39, 41, 35 and
41. The mean time required for this trip was __________.
A. 35
B. 41
C. 37.5
D. 38
25. The following frequency distribution was constructed for the age of accounts receivable.
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