Exam 3: Numerical Descriptive Measures

The table below gives statistics relating to a hypothetical 10-year record of two portfolios.Assume other statistics relating to these portfolios are the same and the risk-free rate is 3.5%.Using the coefficient of variation and the Sharpe ratio,the fund that is preferred in terms of relative risk and return per unit of risk is

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,and 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?

Consider a population with data values of . The population mean is:

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

Automobiles traveling on a road with a posted speed limit of 65 miles per hour are checked for speed by a state police radar system.The following is a frequency distribution of speeds. The mean speed of the automobiles traveling on this road is closest to:

The following is a list of the number of touch downs LaDainian Tomlinson scored in 5 non-consecutive years as a running back in the NFL. 10,11,28,14,12 Calculate the mean,and median of the number of touch downs LT scored.Does the mean accurately reflect the center of the data?

In what way(s)is the concept of geometric mean useful?

When using the empirical rule,which assumption is made?

The mode is defined as…

The mean return on equity (ROE)for a group of firms in an industry is 15 percent with a variance of 9 percent.The coefficient of variation of the industry's ROE is:

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.

A bowler's scores for a sample of six games were The bowler's modal score is:

Professors at a local university earn an average salary of $80,000 with a standard deviation of $6,000.Using Chebyshev's inequality,the percentage of salaries falling between $68,000 and $92,000 is at least:

The owner of a company has recently decided to raise the salary of one employee,who was already making the highest salary,by 20%.Which of the following is (are)expected to be affected by this raise?

Sales for Adidas grew at a rate of 0.5196 in 2006,0.0213 in 2007,0.0485 in 2008,and -0.0387 in 2009.The average growth rate for Adidas during these four years is closest to:

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. a.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?

What capabilities do Chebyshev's theorem and the empirical rule provide?

Which of the following statements about the mean absolute deviation (MAD)is most accurate? MAD:

The annual returns (in percent)for a sample of stocks in the technology industry over the past year are as follows: The median return is closest to:

Consider a population with data values of . The median is: