Question 1

TABLE 3-5
The rate of return of a Fortune 500 company over the past 15 years are: 3.17%, 4.43%, 5.93%, 5.43%, 7.29%, 8.21%, 6.23%, 5.23%, 4.34%, 6.68%, 7.14%, -5.56%, -5.23%, -5.73%, -10.34%
-Referring to Table 3-5, what is the shape of the distribution for the rate of return?

Accepted Answer

The answer of TABLE 3-5
The rate of return of a...

Question 2

Which of the following is sensitive to extreme values?

Accepted Answer

A)  the median 
B)  the interquartile range 
C)  the arithmetic mean 
D)  the 1st quartile

Question 3

In right-skewed distributions, which of the following is the correct statement?

Accepted Answer

A)  The distance from Q1 to Q2 is larger than the distance from Q2 to Q3. 
B)  The distance from Q1 to Q2 is smaller than the distance from Q2 to Q3. 
C)  The arithmetic mean is smaller than the median. 
D)  The mode is larger than the arithmetic mean.

Question 4

TABLE 3-4
The ordered array below represents the number of cargo manifests approved by customs inspectors of the Port of New York in a sample of 35 days:
16, 17, 18, 18, 19, 20, 20, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 25, 25, 26, 26, 26, 27, 28, 28, 29, 29, 31, 31, 32, 32
Note: For this sample, the sum of the observations is 838, the sum of the squares of the observations is 20,684, and the sum of the squared differences between each observation and the mean is 619.89.
-Referring to Table 3-4, the arithmetic mean of the customs data is ________.

Accepted Answer

The answer of TABLE 3-4
The ordered array below represents the...

Question 5

As a general rule, an observation is considered an extreme value if its Z score is greater than -3.

Accepted Answer

A) True 
 B)False

Question 6

TABLE 3-8
The time period from 2006 to 2009 saw a great deal of volatility in the value of stocks. The data in the following table represent the total rate of return of our companies from 2006 to 2009.
 
-Referring to Table 3-8, calculate the geometric mean rate of return for Company D.

Accepted Answer

The answer of TABLE 3-8
The time period from 2006 to...

Question 7

Which of the following is NOT a measure of central tendency?

Accepted Answer

A)  the arithmetic mean 
B)  the geometric mean 
C)  the mode 
D)  the interquartile range

Question 8

TABLE 3-1
Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over 60 years of age whose net worth is too high to qualify for Medicaid and have no private health insurance. The ages of 25 uninsured senior citizens were as follows:
 
-Referring to Table 3-1, identify the third quartile of the ages of the uninsured senior citizens.

Accepted Answer

The answer of TABLE 3-1
Health care issues are receiving much...

Question 9

TABLE 3-4
The ordered array below represents the number of cargo manifests approved by customs inspectors of the Port of New York in a sample of 35 days:
16, 17, 18, 18, 19, 20, 20, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 25, 25, 26, 26, 26, 27, 28, 28, 29, 29, 31, 31, 32, 32
Note: For this sample, the sum of the observations is 838, the sum of the squares of the observations is 20,684, and the sum of the squared differences between each observation and the mean is 619.89.
-Referring to Table 3-4, the range of the customs data is ________.

Accepted Answer

The answer of TABLE 3-4
The ordered array below represents the...

Question 10

In a boxplot, the box portion represents the data between the first and third quartile values.

Accepted Answer

A) True 
 B)False

Question 11

The larger the Z score, the farther is the distance from the observation to the median.

Accepted Answer

A) True 
 B)False

Question 12

According to the Chebyshev rule, at least 75% of all observations in any data set are contained within a distance of how many standard deviations around the mean?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4

Question 13

Which of the following is the easiest to compute?

Accepted Answer

A)  the arithmetic mean 
B)  the median 
C)  the mode 
D)  the geometric mean

Question 14

TABLE 3-6
The rate of return of an Internet Service Provider over a 10 year period are: 10.25%, 12.64%, 8.37%, 9.29%, 6.23%, 42.53%, 29.23%, 15.25%, 21.52%, -2.35%.
-Referring to Table 3-6, construct a boxplot for the rate of return

Accepted Answer

The answer of TABLE 3-6
The rate of return of an...

Question 15

TABLE 3-4
The ordered array below represents the number of cargo manifests approved by customs inspectors of the Port of New York in a sample of 35 days:
16, 17, 18, 18, 19, 20, 20, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 25, 25, 26, 26, 26, 27, 28, 28, 29, 29, 31, 31, 32, 32
Note: For this sample, the sum of the observations is 838, the sum of the squares of the observations is 20,684, and the sum of the squared differences between each observation and the mean is 619.89.
-Referring to Table 3-4, the coefficient of variation of the customs data is ________ percent.

Accepted Answer

The answer of TABLE 3-4
The ordered array below represents the...

Question 16

In left-skewed distributions, the distance from the smallest observation to Q1 exceeds the distance from Q3 to the largest observation.

Accepted Answer

A) True 
 B)False

Question 17

TABLE 3-4
The ordered array below represents the number of cargo manifests approved by customs inspectors of the Port of New York in a sample of 35 days:
16, 17, 18, 18, 19, 20, 20, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 25, 25, 26, 26, 26, 27, 28, 28, 29, 29, 31, 31, 32, 32
Note: For this sample, the sum of the observations is 838, the sum of the squares of the observations is 20,684, and the sum of the squared differences between each observation and the mean is 619.89.
-Referring to Table 3-4, the variance of the customs data is ________.

Accepted Answer

The answer of TABLE 3-4
The ordered array below represents the...

Question 18

The rate of return for the S&P 500 over a four year period is -0.029, -0.061, -0.493, and -0.286. The geometric mean rate of return is _______.

Accepted Answer

The answer of The rate of return for the S&P...

Question 19

TABLE 3-7
In the 2009-2010 academic year, many public universities in the United States raised tuition and fees due to a decrease in state subsidies. The change in the cost of tuition, a shared dormitory room, and the most popular meal plan from the 2008-2009 academic year for a sample of 10 public universities were as follows: $1589, $593, $1223, $869, $423, $1720, $708, $1425, $922 and $308.
-Referring to Table 3-7, what is the coefficient of variation of the change in cost?

Accepted Answer

The answer of TABLE 3-7
In the 2009-2010 academic year, many...

Question 20

TABLE 3-8
The time period from 2006 to 2009 saw a great deal of volatility in the value of stocks. The data in the following table represent the total rate of return of our companies from 2006 to 2009.
 
-Referring to Table 3-8, calculate the geometric mean rate of return for Company A.

Accepted Answer

The answer of TABLE 3-8
The time period from 2006 to...

Exam 3: Numerical Descriptive Measures

TABLE 3-5 The rate of return of a Fortune 500 company over the past 15 years are: 3.17%, 4.43%, 5.93%, 5.43%, 7.29%, 8.21%, 6.23%, 5.23%, 4.34%, 6.68%, 7.14%, -5.56%, -5.23%, -5.73%, -10.34% -Referring to Table 3-5, what is the shape of the distribution for the rate of return?

Which of the following is sensitive to extreme values?

In right-skewed distributions, which of the following is the correct statement?

As a general rule, an observation is considered an extreme value if its Z score is greater than -3.

TABLE 3-8 The time period from 2006 to 2009 saw a great deal of volatility in the value of stocks. The data in the following table represent the total rate of return of our companies from 2006 to 2009. -Referring to Table 3-8, calculate the geometric mean rate of return for Company D.

Which of the following is NOT a measure of central tendency?

In a boxplot, the box portion represents the data between the first and third quartile values.

The larger the Z score, the farther is the distance from the observation to the median.

According to the Chebyshev rule, at least 75% of all observations in any data set are contained within a distance of how many standard deviations around the mean?

Which of the following is the easiest to compute?

TABLE 3-6 The rate of return of an Internet Service Provider over a 10 year period are: 10.25%, 12.64%, 8.37%, 9.29%, 6.23%, 42.53%, 29.23%, 15.25%, 21.52%, -2.35%. -Referring to Table 3-6, construct a boxplot for the rate of return

In left-skewed distributions, the distance from the smallest observation to Q₁ exceeds the distance from Q₃ to the largest observation.

The rate of return for the S&P 500 over a four year period is -0.029, -0.061, -0.493, and -0.286. The geometric mean rate of return is _______.

TABLE 3-8 The time period from 2006 to 2009 saw a great deal of volatility in the value of stocks. The data in the following table represent the total rate of return of our companies from 2006 to 2009. -Referring to Table 3-8, calculate the geometric mean rate of return for Company A.