Question 1

Using the information gathered for real estate prices in Regina and surrounding areas in the early
2000's, determine the standard deviation of the selling prices at that time. 
A) $88,330
B) $20,000
C) $25,000
D) $78,350
E) $88,939

Accepted Answer

$88,939

Question 2

Using the information gathered for real estate prices in Regina and surrounding areas in the early
2000's, determine the mean of the selling prices at that time. 
A) $188,330
B) $200,000
C) $125,000
D) $178,350
E) $195,600

Accepted Answer

$188,330

Question 3

Production of passenger cars in Japan increased from 3.94 million in 1990 to 6.74 million in 2000.
What is the geometric mean annual percent increase?
A) 4.0
B) 1.9
C) 5.5
D) 16.6
E) 47.3

Accepted Answer

5.5

Question 4

The Federal Aviation Administration reported that passenger revenues on international ﬂights
Increased from $528 million in 1977 to $5,100 million in 2000. What is the geometric mean annual
Percent increase in international passenger revenues?
A) 10.4
B) 27.9
C) 103.6
D) 9.96
E) None of the choices are correct.

Accepted Answer

103.6

Question 5

A sample of the paramedical fees charged by clinics revealed these amounts: $55, $49, $50, $45,
$52 and $55. What is the median charge?
A) $47.50
B) $51.00
C) $52.00
D) $55.00
E) $48.00

Accepted Answer

$51.00

Question 6

A sample of single persons receiving social security payments revealed these monthly beneﬁts:
$826, $699, $1,087, $880, $839 and $965. How many observations are below the median?
A) 0
B) 1
C) 2
D) 3

Accepted Answer

3

Question 7

A sample of the daily production of transceivers was organized into the following distribution.  What is the mean daily production?
A) 86.4
B) 101.4
C) 111.4
D) 106.4
E) 20.0

Accepted Answer

106.4

Question 8

A bottling company offers three kinds of delivery service - instant, same day and within ﬁve days.
The proﬁt per delivery varies according to the kind of delivery. The proﬁt for an instant delivery is
Less than the other kinds because the driver has to go directly to a grocery store with a small load
And return to the bottling plant. To ﬁnd out what effect each type of delivery has on the proﬁt
Picture, the company has made the following tabulation based on deliveries for the previous
Quarter. 
What is the weighted mean proﬁt per delivery?
A) $72
B) $100
C) $142
D) $97
E) $99

Accepted Answer

$97

Question 9

i. A value that is typical or representative of the data is referred to as a measure of central tendency.
ii. The arithmetic mean is the sum of the observations divided by the total number of observations
iii. The value of the observation in the center after they have been arranged in numerical order is
Called the weighted mean
A) (i), (ii), and (iii) are all correct statements
B) (i) and, (ii) are correct statements but not (iii).
C) (i) and (iii) are correct statements but not (ii).
D) (ii) and (iii) are correct statements but not (i).
E) (i), (ii), and (iii) are all false statements.

Accepted Answer

(i) and, (ii) are correct statements but (iii).

Question 10

The lengths of time (in minutes) several underwriters took to review applications for similar
Insurance coverage are: 50, 230, 52 and 57. What is the median length of time required to review
An application?
A) 54.5
B) 141.0
C) 97.25
D) 109.0
E) $$55.40

Accepted Answer

54.5

Question 11

The Investment Company Institute reported in its Mutual Fund Fact Book that the number of mutual
Funds increased from 410 in 1990 to 857 in 2000. What is the geometric mean annual percent
Increase in the number of funds?
A) 1.12
B) 7.65
C) 19.41
D) 48.66

Accepted Answer

7.65

Question 12

A stockbroker placed the following order for a customer:
-50 shares of Kaiser Aluminum preferred at $104 a share
-100 shares of GTE preferred at $25 1/4 a share
-20 shares of Boston Edison preferred at $9 1/8 a share
What is the weighted arithmetic mean price per share?
A) $25.25
B) $79.75
C) $103.50
D) $42.75
E) Weighted mean cannot be computed for this data set.

Accepted Answer

Weighted mean can be computed for this data set.

Question 13

The net sales of a sample of small stamping plants were organized into the following percent
Frequency distribution. 
What is the mean net sales (in $millions)?
A) $7.09
B) $10.09
C) $8.59
D) $8.34
E) Mean cannot be computed

Accepted Answer

Mean can be computed

Question 14

Using the information gathered for real estate prices in Regina and surrounding areas in the early
2000's, determine the median of the selling prices at that time. 
A) $188,330
B) $200,000
C) $125,000
D) $175,000
E) $195,600

Accepted Answer

$175,000

Question 15

The number of work stoppages in a highly industrialized region for selected months are: 6, 0, 10, 14,
8 and 0. What is the median number of stoppages?
A) 0
B) 6
C) 7
D) 8

Accepted Answer

7

Question 16

Assume a student received the following grades for the semester: History, B; Statistics, A; Spanish,C. History and English are 5 credit hour courses, Statistics a 4 credit hour course and Spanish a 3 credit hour course. If 4 grade points are assigned for an A, 3 for a B and 2 for a C, what is the weighted mean for the semester grades?
A) 4.00
B) 1.96
C) 2.76
D) 3.01
E) 2.88

Accepted Answer

2.76

Question 17

The U.S. Department of Education reported that for the past six years 23, 19, 15, 30, 27 and 25
Women received doctorate degrees in computer and information sciences. What is the mean
Arithmetic annual number of women receiving this degree?
A) 15.1
B) 23.2
C) 37.9
D) 22.9
E) $22.3

Accepted Answer

23.2

Question 18

During the past six months, the purchasing agent bought:  What is the weighted arithmetic mean price per ton?
A) $87.25
B) $72.33
C) $68.47
D) $89.18
E) Weighted mean cannot be computed for this data set.

Accepted Answer

$72.33

Question 19

The ages of newly hired, unskilled employees were grouped into the following distribution:  What is the median age?
A) 28.50
B) 28.08
C) 25.08
D) 27.14
E) 20.00

Accepted Answer

27.14

Question 20

A sample of light trucks using diesel fuel revealed the following distribution based on fuel eﬃciency,
i.e., litres per 100 km. 
What is the arithmetic mean in litres per 100 km?
A) 16.9
B) 14.6
C) 17.0
D) 17.9
E) Mean cannot be estimated.

Accepted Answer

14.6

Quiz 3: Describing Data: Numerical Measures

Using the information gathered for real estate prices in Regina and surrounding areas in the early 2000's, determine the standard deviation of the selling prices at that time.

Using the information gathered for real estate prices in Regina and surrounding areas in the early 2000's, determine the mean of the selling prices at that time.

Production of passenger cars in Japan increased from 3.94 million in 1990 to 6.74 million in 2000. What is the geometric mean annual percent increase?

The Federal Aviation Administration reported that passenger revenues on international ﬂights Increased from $528 million in 1977 to $5,100 million in 2000. What is the geometric mean annual Percent increase in international passenger revenues?

A sample of the paramedical fees charged by clinics revealed these amounts: $55, $49, $50, $45, $52 and $55. What is the median charge?

A sample of single persons receiving social security payments revealed these monthly beneﬁts: $826, $699, $1,087, $880, $839 and $965. How many observations are below the median?

A sample of the daily production of transceivers was organized into the following distribution. What is the mean daily production?

The lengths of time (in minutes) several underwriters took to review applications for similar Insurance coverage are: 50, 230, 52 and 57. What is the median length of time required to review An application?

The Investment Company Institute reported in its Mutual Fund Fact Book that the number of mutual Funds increased from 410 in 1990 to 857 in 2000. What is the geometric mean annual percent Increase in the number of funds?

A stockbroker placed the following order for a customer: -50 shares of Kaiser Aluminum preferred at $104 a share -100 shares of GTE preferred at $25 1/4 a share -20 shares of Boston Edison preferred at $9 1/8 a share What is the weighted arithmetic mean price per share?

The net sales of a sample of small stamping plants were organized into the following percent Frequency distribution. What is the mean net sales (in $millions) ?

Using the information gathered for real estate prices in Regina and surrounding areas in the early 2000's, determine the median of the selling prices at that time.

The number of work stoppages in a highly industrialized region for selected months are: 6, 0, 10, 14, 8 and 0. What is the median number of stoppages?

The U.S. Department of Education reported that for the past six years 23, 19, 15, 30, 27 and 25 Women received doctorate degrees in computer and information sciences. What is the mean Arithmetic annual number of women receiving this degree?

During the past six months, the purchasing agent bought: What is the weighted arithmetic mean price per ton?

The ages of newly hired, unskilled employees were grouped into the following distribution: What is the median age?

A sample of light trucks using diesel fuel revealed the following distribution based on fuel eﬃciency, i.e., litres per 100 km. What is the arithmetic mean in litres per 100 km?