Question 1

You were told that the 1ˢᵗ, 2ⁿᵈ and 3ʳᵈ quartiles of female students' weight at a major university are 95 lbs, 125 lbs, and 138 lbs. What percentage of the students weigh less than 95 lbs?

Accepted Answer

The answer of You were told that the 1ˢᵗ, 2ⁿᵈ...

Question 2

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

Accepted Answer

This statement is true. An extreme value is defined as having a Z score less than -3 or greater than 3.

Question 3

You were told that the 1ˢᵗ, 2ⁿᵈ and 3ʳᵈ quartiles of female students' weight at a major university are 95 lbs, 125 lbs, and 138 lbs. What percentage of the students weigh more than 138 lbs?

Accepted Answer

The answer of You were told that the 1ˢᵗ, 2ⁿᵈ...

Question 4

You were told that the 1ˢᵗ, 2ⁿᵈ and 3ʳᵈ quartiles of female students' weight at a major university are 95 lbs, 125 lbs, and 138 lbs. What percentage of the students weigh between 95 and 138 lbs?

Accepted Answer

The answer of You were told that the 1ˢᵗ, 2ⁿᵈ...

Question 5

TABLE 3-5
The rates 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 range of the rate of return?

Accepted Answer

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

Question 6

TABLE 3-5
The rates 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, compute the geometric mean rate of return per year for the first four years.

Accepted Answer

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

Question 7

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

Accepted Answer

The Z score measures the distance of a value from the mean, not the median, in terms of standard deviations.

Question 8

TABLE 3-5
The rates 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, construct a boxplot for the rate of return.

Accepted Answer

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

Question 9

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

Accepted Answer

This is correct - values with Z scores greater than 3 are typically considered extreme outliers.

Question 10

The Z score of a value measures how many standard deviations the value is from the mean.

Accepted Answer

This statement is true. The Z score is calculated by subtracting the mean from the value and then dividing by the standard deviation. It represents the number of standard deviations that the value is away from the mean.

Question 11

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

Accepted Answer

A value is considered an extreme value if its Z score is greater than 3 or less than -3, not just greater than -3.

Question 12

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

Accepted Answer

A Z score of less than 3 indicates that a value is within 3 standard deviations from the mean, which is not necessarily considered extreme. An extreme value is usually defined as being much further from the mean, often beyond 3 or 4 standard deviations. Therefore, the statement in the question is false.

Question 13

TABLE 3-6
The rates 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 rates of return of an...

Question 14

You were told that the 1ˢᵗ, 2ⁿᵈ and 3ʳᵈ quartiles of female students' weight at a major university are 95 lbs, 125 lbs, and 138 lbs. What percentage of the students weigh more than 125 lbs?

Accepted Answer

The answer of You were told that the 1ˢᵗ, 2ⁿᵈ...

Question 15

The Z score of a value can never be negative.

Accepted Answer

The formula for calculating the Z score can result in a negative value if the score is below the mean.

Question 16

TABLE 3-6
The rates 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, compute the arithmetic mean rate of return per year.

Accepted Answer

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

Question 17

TABLE 3-6
The rates 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, compute the geometric mean rate of return per year for the first three years.

Accepted Answer

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

Question 18

The Z scores can be used to identify outliers.

Accepted Answer

Z scores indicate how far from the mean a data point is, in terms of standard deviations. If a data point has a Z score that is very high or very low, it is considered an outlier. Therefore, Z scores can be used to identify outliers.

Question 19

TABLE 3-5
The rates 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 rates of return of a...

Question 20

TABLE 3-6
The rates 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, what is the shape of the distribution for the rate of return?

Accepted Answer

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

Quiz 3: Numerical Descriptive Measures

You were told that the 1ˢᵗ, 2ⁿᵈ and 3ʳᵈ quartiles of female students' weight at a major university are 95 lbs, 125 lbs, and 138 lbs. What percentage of the students weigh less than 95 lbs?

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

You were told that the 1ˢᵗ, 2ⁿᵈ and 3ʳᵈ quartiles of female students' weight at a major university are 95 lbs, 125 lbs, and 138 lbs. What percentage of the students weigh more than 138 lbs?

You were told that the 1ˢᵗ, 2ⁿᵈ and 3ʳᵈ quartiles of female students' weight at a major university are 95 lbs, 125 lbs, and 138 lbs. What percentage of the students weigh between 95 and 138 lbs?

TABLE 3-5 The rates 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 range of the rate of return?

TABLE 3-5 The rates 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, compute the geometric mean rate of return per year for the first four years.

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

TABLE 3-5 The rates 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, construct a boxplot for the rate of return.

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

The Z score of a value measures how many standard deviations the value is from the mean.

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

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

TABLE 3-6 The rates 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

You were told that the 1ˢᵗ, 2ⁿᵈ and 3ʳᵈ quartiles of female students' weight at a major university are 95 lbs, 125 lbs, and 138 lbs. What percentage of the students weigh more than 125 lbs?

The Z score of a value can never be negative.

TABLE 3-6 The rates 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, compute the arithmetic mean rate of return per year.

TABLE 3-6 The rates 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, compute the geometric mean rate of return per year for the first three years.

The Z scores can be used to identify outliers.

TABLE 3-5 The rates 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?

TABLE 3-6 The rates 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, what is the shape of the distribution for the rate of return?