Question 1 (1 point) The general process of organizing, summarizing, and presenting data in an informative way is called Question 1 options: A) Descriptive statistics.
Question 1 (1 point)
The general process of organizing, summarizing, and presenting data in an informative way is called
Question 1 options:
A)
Descriptive statistics.
B)
Levels of measurement.
C)
Inferential statistics.
D)
Statistics.
Question 2 (1 point)
The general process of analyzing, and interpreting data to assist in making more effective decisions is called
Question 2 options:
A)
Descriptive statistics.
B)
Statistics.
C)
Inferential statistics.
D)
Levels of measurement.
Question 3 (1 point)
Colleen Waite, Director of General Canadian Sales, is concerned by a downward sales trend. Specifically, their customer base is stable at 2,200, 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 50 customers.
Question 3 options:
A)
The 2,200 customers represent an inferential statistic.
B)
The 2,200 customers represent a census.
C)
The 2,200 customers represent a population.
D)
The 2,200 customers represent a sample.
Question 4 (1 point)
Colleen Waite, Director of General Canadian Sales, is concerned by a downward sales trend. Specifically, their customer base is stable at 2,200, 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 50 customers.
Question 4 options:
A)
The focus group of 50 customers represents an inferential statistic.
B)
The focus group of 50 customers represents a population.
C)
The focus group of 50 customers represents a sample.
D)
The focus group of 50 customers represents a census.
Question 5 (1 point)
A company was studying the demographics of their customers. As part of the study they collected the following variables: gender, marital status, credit rating (low, medium, high), annual income, and age. Which two of the variables are considered to be quantitative rather than qualitative?
Question 5 options:
A)
age and credit rating
B)
gender and marital status
C)
annual income and age
D)
gender and annual income
Question 6 (1 point)
A bank asks customers to evaluate the drive-thru service as to good, average, or poor. Which level of measurement is this classification?
Question 6 options:
A)
Ratio
B)
Nominal
C)
Interval
D)
Ordinal
Question 7 (1 point)
If Gallup, Harris and other pollsters asked people to indicate their political party affiliationLiberal, Conservative or NDP, the data gathered would be an example of which scale of measurement?
Question 7 options:
A)
Interval
B)
Nominal
C)
Ratio
D)
Ordinal
Question 8 (1 point)
What level of measurement is the price of an admission ticket to a movie theater?
Question 8 options:
A)
Ordinal
B)
Nominal
C)
Ratio
D)
Interval
Question 9 (1 point)
What level of measurement are the Centigrade and Fahrenheit temperature scales?
Question 9 options:
A)
Ratio
B)
Ordinal
C)
Interval
D)
Nominal
Question 10 (1 point)
What type of data is the number of robberies reported in your city?
Question 10 options:
A)
Continuous
B)
Discrete
C)
Attribute
D)
Qualitative
Question 11 (1 point)
Your height and weight are examples of which type of random variable?
Question 11 options:
A)
Continuous
B)
Qualitative
C)
Discrete
D)
Mutually exclusive
Question 12 (1 point)
The Shell station on Portage Ave in Winnipeg is studying the number of litres of fuel that are sold on each day of the week. Records are available for the past year. How can the variable 'number of litres' be best described?
Question 12 options:
A)
Census
B)
Qualitative
C)
Discrete
D)
Nominal
E)
Quantitative
Question 13 (1 point)
The Shell station on Portage Ave in Winnipeg is studying the number of litres of fuel that are sold on each day of the week. Records are available for the past year. How can the variable 'number of litres' be best described?
Question 13 options:
A)
Nominal
B)
Census
C)
Discrete
D)
Qualitative
E)
Continuous
Question 14 (1 point)
The Shell station on Portage Ave in Winnipeg is studying the number of litres of fuel that are sold on each day of the week. Records are available for the past year. Is the variable 'number of litres' discrete or continuous?
Question 14 options:
A)
continuous
B)
discrete
Question 15 (1 point)
(i) There are two types of variables-quantitative and qualitative. (ii) A Qualitative variable is nonnumeric and we are usually interested in the number or percent of the observations from each category. (iii) Quantitative variables can be further divided into discrete and continuous variables.
Question 15 options:
A)
(i) and (iii) are correct statements but not (ii).
B)
(i) and (ii) are correct statements but not (iii).
C)
(ii) and (iii) are correct statements but not (i).
D)
(i), (ii) and (iii) are all correct statements.
Question 16 (1 point)
A company was studying the demographics of their customers. As part of the study they collected the following variables: gender, marital status, credit rating (low, medium, high), annual income, and age. Label the variable credit rating as qualitative or quantitative, discrete or continuous, and nominal, ordinal, interval, or ratio.
Question 16 options:
A)
quantitative, continuous, ratio
B)
qualitative, discrete, ordinal
C)
quantitative, discrete, nominal
D)
qualitative, continuous, nominal
Question 17 (1 point)
A company was studying the demographics of their customers. As part of the study they collected the following variables: gender, marital status, credit rating (low, medium, high), annual income, and age. Label the variable annual income as qualitative or quantitative, discrete or continuous, and nominal, ordinal, interval, or ratio.
Question 17 options:
A)
qualitative, continuous, ordinal
B)
quantitative, continuous, ratio
C)
qualitative, discrete, nominal
D)
quantitative, discrete, nominal
Question 18 (1 point)
Monthly commissions of first-year insurance brokers are $1,270, $1,310, $1,680, $1,380, $1,410, $1,570, $1,180 and $1,420. These figures are referred to as:
Question 18 options:
A)
raw data.
B)
frequency distribution.
C)
frequency polygon.
D)
histogram.
Question 19 (1 point)
Which of the following would be most helpful if you wished to construct a pie chart?
Question 19 options:
A)
a relative frequency table
B)
a clustered bar chart
C)
a frequency distribution
D)
an ogive
E)
a cumulative frequency distribution
Question 20 (1 point)
What is the following table called?
Ages
Number of Ages
20 to under 30
16
30 to under 40
25
40 to under 50
51
50 to under 60
80
60 to under 70
20
70 to under 80
8
Question 20 options:
A)
Frequency polygon
B)
Cumulative frequency distribution
C)
Frequency distribution
D)
Histogram
Question 21 (1 point)
The monthly salaries of a sample of 100 employees were rounded to the nearest ten dollars. They ranged from a low of $1,040 to a high of $1,720. If we want to condense the data into seven classes, what is the most convenient class interval?
Question 21 options:
A)
$50
B)
$200
C)
$100
D)
$150
Question 22 (1 point)
Refertothefollowingdistributionofages:
Ages
Number
40 up to 50
10
50 up to 60
28
60 up to 70
12
What is the class interval?
Question 22 options:
A)
10
B)
11
C)
9
D)
10.5
Question 23 (1 point)
Refer to the following ages (rounded to the nearest whole year) of employees at a large company that were grouped into a distribution with class limits: 20 up to 30 30 up to 40 40 up to 50 50 up to 60 60 up to 70 What is the class interval and the midpoint of the first class?
Question 23 options:
A)
10 and 25
B)
20 and 25
C)
20 and 24.5
D)
10 and 24.5
Question 24 (1 point)
Using the frequency table below, determine the relative frequencies for Apartment and Townhouse listings.
Type
Number Of Listings
Apartment
58
House
26
Townhouse
14
Total
98
Question 24 options:
A)
5000 and.2653
B)
1429 and.2495
C)
5000 and.5000
D)
5918 and.1429
E)
2653 and.1429
Question 25 (1 point)
Consider the following relative frequency distribution:
Class Interval
Relative Frequency
0 to under 10
0.2
10 to under 20
0.3
20 to under 30
0.45
30 to under 40
0.05
If there are 2,000 numbers in the data set, how many of the values are less than 30?
Question 25 options:
A)
1900
B)
100
C)
90
D)
900
Question 26 (1 point)
Refertothefollowingdistributionofcommissions:
Monthly commissions
Class Frequencies
$600 to under $800
3
800 to under 1,000
7
1,000 to under 1,200
11
1,200 to under 1,400
22
1,400 to under 1,600
40
1,600 to under 1,800
24
1,800 to under 2,000
9
2,000 to under 2,200
4
What is the relative frequency for those salespersons that earn between $1,600 and $1,799?
Question 26 options:
A)
2.4%
B)
20%
C)
2%
D)
24%
Question 27 (1 point)
Refertothefollowingdistributionofcommissions:
Monthly commissions
Class Frequencies
$600 to under $800
3
800 to under 1,000
7
1,000 to under 1,200
11
1,200 to under 1,400
22
1,400 to under 1,600
40
1,600 to under 1,800
24
1,800 to under 2,000
9
2,000 to under 2,200
4
What is the relative frequency of those salespersons that earn more than $1,599?
Question 27 options:
A)
27.5%
B)
29.5%
C)
25.5%
D)
30.8%
Question 28 (1 point)
The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school:
Salary ($1,000s)
Number of Graduates
18-under 21
-
21-under 25
-
24-under 27
-
29-under 30
-
Before data was collected, someone questioned the validity of this arrangement. Which of the following represents a problem with this set of intervals?
Question 28 options:
A)
the class widths are too small
B)
the first and the second intervals overlap
C)
the second and third intervals overlap
D)
there are too many intervals
E)
some numbers between 18,000 and 30,000 would not fall into any of these intervals
