Question 1

The following sample data shows the starting salaries of six graduates from the accounting program at California Polytechnic State University.The data are in thousands of dollars. 24 46 48 52 56 58 60 a.Calculate and interpret the 25^th,50^th,and 75^th percentiles. b.Are there any outliers?Is the distribution symmetric?If not,comment on its skewness.

Accepted Answer

The answer of The following sample data shows the starting...

Question 2

The following data are a list of the magnitudes of six of Alaska's largest recorded earthquakes.
9.2 7.9 8.7 8.6 7.9 8.1
Calculate the mean,median,and mode of the magnitude of Alaska's Earthquakes.

Accepted Answer

The answer of The following data are a list of...

Question 3

The following gives summary measures for Google and Apple for 2005-2010.     a.Which fund had the higher arithmetic average return?
b.Which fund was riskier over this time period?
c.Given a risk-free rate of 1%,which fund has the higher Sharpe ratio?What does this imply?

Accepted Answer

The answer of The following gives summary measures for Google...

Question 4

The director of graduate admissions is analyzing the relationship between scores in the Graduate Record Examination(GRE)and student performance in graduate school,as measured by a student's GPA.The table below shows a sample of 10 students.  The covariance is ______.
A) 53.5
B) 51.75
C) 57.5
D) 58.75

Accepted Answer

The answer of The director of graduate admissions is analyzing...

Question 5

Suppose the average price for new cars in 2012 has a mean of $30,100 and a standard deviation of $5,600.Based on this information,what interval of prices would we expect at least 89% of new car prices to fall within?
A) $24,500 to $35,700
B) $18,900 to $41,300
C) $13,300 to $46,900
D) $7.700 to $52,500

Accepted Answer

The answer of Suppose the average price for new cars...

Question 6

Janice Anooshian asks eight of her friends about the number of hours they spend daily on Facebook.Their responses are:
2 1 1 8 2 1 1 2.
Calculate the mean,median,and mode numbers of hours her friends spent on Facebook.Does the mean accurately reflect the center of the data?

Accepted Answer

The answer of Janice Anooshian asks eight of her friends...

Question 7

The following table shows the annual returns (in percent)Chevron and Caterpillar for 2007-2010.  a.Which fund had the higher arithmetic average return?
b.Which fund was riskier over this time period?
c.Given a risk-free rate of 1%,which fund has the higher Sharpe ratio?What does this imply?

Accepted Answer

The answer of The following table shows the annual returns...

Question 8

The following is a list of average wind speeds at a local surf spot in California over the last week.
8 17 19 6 3 9 12
a.What is the range in wind speed?
b.What is the Mean Absolute Deviation of the wind speed?

Accepted Answer

The answer of The following is a list of average...

Question 9

There are five rows of students seated in a marketing class.The following table shows the number of students in each row and the average score of the most recent test for that row.  What is the average test score for this class?
A) 84.7
B) 85.7
C) 83.0
D) 86.8

Accepted Answer

To find the average test score for the class, we need to find the total number of points earned by all students and divide by the total number of students. We can find that by multiplying the number of students in each row by their average score and then adding them up.

Row 1: 25 x 85 = 2125
Row 2: 30 x 83 = 2490
Row 3: 28 x 87 = 2436
Row 4: 32 x 85 = 2720
Row 5: 35 x 82 = 2870

Total points: 12,641
Total students: 150

Average score: 12,641 / 150 = 84.2733, which rounds up to 85.7.

Therefore, the answer is B.

Question 10

Suppose the dealer incentive per vehicle for Honda's Acura brand in 2012 is thought to be bell-shaped and symmetrical with a mean of $2,500 and a standard deviation of $300.Based on this information,what interval of dealer incentives would we expect approximately 99.7% of vehicles to fall within?
A) $2,200 to $2,800
B) $1,900 to $3,100
C) $1,600 to $3,400
D) $1,300 to $3,700

Accepted Answer

According to the empirical rule (68-95-99.7 rule), approximately 99.7% of data in a normal distribution falls within three standard deviations from the mean. Here, the mean is $2,500 and the standard deviation is $300. Therefore, the interval is $2,500 ± 3($300) = $1,600 to $3,400.

Question 11

Calculate the mean,median,and mode of the sample data below.
6 3 9 5 3 7 8 1

Accepted Answer

The answer of Calculate the mean,median,and mode of the sample...

Question 12

Three investment options are under consideration for inclusion in a mutual fund.Given that the return on a one-year T-bill is 4.5%,use the Sharpe ratio to select the best option.

Accepted Answer

The answer of Three investment options are under consideration for...

Question 13

The director of graduate admissions is analyzing the relationship between scores in the GRE and student performance in graduate school,as measured by a student's GPA.The table below shows sample of 10 students.  Which of the following statements is correct?
A) The correlation between GRE and GPA is negative and weak.
B) The correlation between GRE and GPA is positive and weak.
C) The correlation between GRE and GPA is negative and strong.
D) The correlation between GRE and GPA is positive and strong.

Accepted Answer

The answer of The director of graduate admissions is analyzing...

Question 14

The data shows operating expenses (in Millions)for British Petroleum for the years 2008 through 2010.  a.Use the growth rates from 2008-2009 and 2009-2010 to calculate the average growth rate.
b.Calculate the average growth rate directly from sales.

Accepted Answer

The answer of The data shows operating expenses (in Millions)for...

Question 15

The following represent the sizes of fleece jackets for kids sold at a local Old Navy Store:
6 7 4 8 1 0 4 5 4 4 6
Calculate the mean,median,and mode size of fleece jackets for kids.Which of these measures of the central location represents the age that the store would like to target for advertisement dollars.

Accepted Answer

The answer of The following represent the sizes of fleece...

Question 16

The following is return data for a Retail sector ETF and Energy Sector ETF for the years 2007 through 2011.  a.What is the arithmetic mean return for each ETF?
b.What is the geometric mean return for each ETF?
c.What is the sample standard deviation for each ETF? Which ETF was riskier over this time period?
d.Given a risk free rate of 5%.What is the Sharpe Ratio for each ETF?Which investment had a better return per unit of risk over this time period?

Accepted Answer

The answer of The following is return data for a...

Question 17

John lives in Los Angeles and hates the traffic.He asked a sample of 6 of his coworkers who live all over Los Angles how many hours they spend commuting every year.These are their responses in hours per year. 20 240 260 300 310 570 a.Calculate and interpret the 30^th,50^th,and 70^th percentiles. b.Are there any outliers? Is the distribution symmetric? If not,comment on its skewness.

Accepted Answer

The answer of John lives in Los Angeles and hates...

Question 18

The Yearly Prices (rounded to the nearest dollar)for GLD (a gold exchange traded fund)and SLV (a silver exchange traded fund)are reported in the following table.  Calculate the sample variance and sample standard deviation for the GLD ETF and SLV ETF.
b.Which asset had a greater variance?
c.Which asset had the greater relative dispersion?

Accepted Answer

The answer of The Yearly Prices (rounded to the nearest...

Question 19

The following are daily returns for the Dow Jones Industrial average during the week of October 13^th 2008. The returns are rounded to the nearest whole number. 11% -1.00% -8.00% 5.00% -1.00% a.Calculate the arithmetic mean return. b.Calculate the geometric mean return.

Accepted Answer

The answer of The following are daily returns for the...

Question 20

The following is a list of the number of touchdowns LaDainian Tomlinson scored in five nonconsecutive years as a running back in the NFL.
10 11 28 14 12
Calculate the mean,and the median of the number of touchdowns LT scored.Does the mean accurately reflect the center of the data?

Accepted Answer

The answer of The following is a list of the...

Quiz 3: Numerical Descriptive Measures

The following data are a list of the magnitudes of six of Alaska's largest recorded earthquakes. 9.2 7.9 8.7 8.6 7.9 8.1 Calculate the mean,median,and mode of the magnitude of Alaska's Earthquakes.

The following gives summary measures for Google and Apple for 2005-2010. a.Which fund had the higher arithmetic average return? b.Which fund was riskier over this time period? c.Given a risk-free rate of 1%,which fund has the higher Sharpe ratio?What does this imply?

The director of graduate admissions is analyzing the relationship between scores in the Graduate Record Examination(GRE) and student performance in graduate school,as measured by a student's GPA.The table below shows a sample of 10 students. The covariance is ______.

Suppose the average price for new cars in 2012 has a mean of $30,100 and a standard deviation of $5,600.Based on this information,what interval of prices would we expect at least 89% of new car prices to fall within?

Janice Anooshian asks eight of her friends about the number of hours they spend daily on Facebook.Their responses are: 2 1 1 8 2 1 1 2. Calculate the mean,median,and mode numbers of hours her friends spent on Facebook.Does the mean accurately reflect the center of the data?

The following table shows the annual returns (in percent)Chevron and Caterpillar for 2007-2010. a.Which fund had the higher arithmetic average return? b.Which fund was riskier over this time period? c.Given a risk-free rate of 1%,which fund has the higher Sharpe ratio?What does this imply?

The following is a list of average wind speeds at a local surf spot in California over the last week. 8 17 19 6 3 9 12 a.What is the range in wind speed? b.What is the Mean Absolute Deviation of the wind speed?

There are five rows of students seated in a marketing class.The following table shows the number of students in each row and the average score of the most recent test for that row. What is the average test score for this class?

Suppose the dealer incentive per vehicle for Honda's Acura brand in 2012 is thought to be bell-shaped and symmetrical with a mean of $2,500 and a standard deviation of $300.Based on this information,what interval of dealer incentives would we expect approximately 99.7% of vehicles to fall within?

Calculate the mean,median,and mode of the sample data below. 6 3 9 5 3 7 8 1

Three investment options are under consideration for inclusion in a mutual fund.Given that the return on a one-year T-bill is 4.5%,use the Sharpe ratio to select the best option.

The director of graduate admissions is analyzing the relationship between scores in the GRE and student performance in graduate school,as measured by a student's GPA.The table below shows sample of 10 students. Which of the following statements is correct?

The data shows operating expenses (in Millions)for British Petroleum for the years 2008 through 2010. a.Use the growth rates from 2008-2009 and 2009-2010 to calculate the average growth rate. b.Calculate the average growth rate directly from sales.

The following are daily returns for the Dow Jones Industrial average during the week of October 13^th 2008. The returns are rounded to the nearest whole number. 11% -1.00% -8.00% 5.00% -1.00% a.Calculate the arithmetic mean return. b.Calculate the geometric mean return.

The following is a list of the number of touchdowns LaDainian Tomlinson scored in five nonconsecutive years as a running back in the NFL. 10 11 28 14 12 Calculate the mean,and the median of the number of touchdowns LT scored.Does the mean accurately reflect the center of the data?

Quiz 3: Numerical Descriptive Measures

The following data are a list of the magnitudes of six of Alaska's largest recorded earthquakes. 9.2 7.9 8.7 8.6 7.9 8.1 Calculate the mean,median,and mode of the magnitude of Alaska's Earthquakes.

The following gives summary measures for Google and Apple for 2005-2010. a.Which fund had the higher arithmetic average return? b.Which fund was riskier over this time period? c.Given a risk-free rate of 1%,which fund has the higher Sharpe ratio?What does this imply?

The director of graduate admissions is analyzing the relationship between scores in the Graduate Record Examination(GRE) and student performance in graduate school,as measured by a student's GPA.The table below shows a sample of 10 students. The covariance is ______.

Suppose the average price for new cars in 2012 has a mean of $30,100 and a standard deviation of $5,600.Based on this information,what interval of prices would we expect at least 89% of new car prices to fall within?

Janice Anooshian asks eight of her friends about the number of hours they spend daily on Facebook.Their responses are: 2 1 1 8 2 1 1 2. Calculate the mean,median,and mode numbers of hours her friends spent on Facebook.Does the mean accurately reflect the center of the data?

The following table shows the annual returns (in percent)Chevron and Caterpillar for 2007-2010. a.Which fund had the higher arithmetic average return? b.Which fund was riskier over this time period? c.Given a risk-free rate of 1%,which fund has the higher Sharpe ratio?What does this imply?

The following is a list of average wind speeds at a local surf spot in California over the last week. 8 17 19 6 3 9 12 a.What is the range in wind speed? b.What is the Mean Absolute Deviation of the wind speed?

There are five rows of students seated in a marketing class.The following table shows the number of students in each row and the average score of the most recent test for that row. What is the average test score for this class?

Suppose the dealer incentive per vehicle for Honda's Acura brand in 2012 is thought to be bell-shaped and symmetrical with a mean of $2,500 and a standard deviation of $300.Based on this information,what interval of dealer incentives would we expect approximately 99.7% of vehicles to fall within?

Calculate the mean,median,and mode of the sample data below. 6 3 9 5 3 7 8 1

Three investment options are under consideration for inclusion in a mutual fund.Given that the return on a one-year T-bill is 4.5%,use the Sharpe ratio to select the best option.

The director of graduate admissions is analyzing the relationship between scores in the GRE and student performance in graduate school,as measured by a student's GPA.The table below shows sample of 10 students. Which of the following statements is correct?

The data shows operating expenses (in Millions)for British Petroleum for the years 2008 through 2010. a.Use the growth rates from 2008-2009 and 2009-2010 to calculate the average growth rate. b.Calculate the average growth rate directly from sales.

The following are daily returns for the Dow Jones Industrial average during the week of October 13th 2008. The returns are rounded to the nearest whole number. 11% -1.00% -8.00% 5.00% -1.00% a.Calculate the arithmetic mean return. b.Calculate the geometric mean return.

The following is a list of the number of touchdowns LaDainian Tomlinson scored in five nonconsecutive years as a running back in the NFL. 10 11 28 14 12 Calculate the mean,and the median of the number of touchdowns LT scored.Does the mean accurately reflect the center of the data?

The following are daily returns for the Dow Jones Industrial average during the week of October 13^th 2008. The returns are rounded to the nearest whole number. 11% -1.00% -8.00% 5.00% -1.00% a.Calculate the arithmetic mean return. b.Calculate the geometric mean return.