Question 1

Is there correlation between height and longevity? Do some quick online research and find data and specific examples that prove your point in the most objective manner possible.

Accepted Answer

The longest living Japenese are Okinawans, who are the smallest. The longest living Pakistanis are Hunzas, who are also the smallest. A regression analysis conducted by the coroner of Cuyahoga County of Ohio showed that each additional inch of height reduced the age of death by 1.2 years.

Question 2

Calculate the weighted hourly average wage for the data provided in previous question by incorporating the following hourly pay information. The workers who worked 15, 20, 21, and 22 hours earn $10 per hour while all the other workers earn $12 per hour. What is the weighted average hourly wage?

Accepted Answer

((78 hours x $10) + (170 hours x $12))/248
($780 + $2040)/248 = $11.37 weighted average wage per hour.

Question 3

You have ten part-time employees who worked 20, 25, 25, 30, 31, 32, 27, 21, 22, and 15 hours during the week. Calculate the mean, median and mode for the hours worked during the week.

Accepted Answer

Mean: 248/10 = 24.8hrs
Median: (15-20-21-22-25-25-27-30-31-32) 25-hour is in the middle, so it is the median.
Mode: 25 is the mode as it is the most frequent number.

Question 4

Netflix's and Amazon's ability to suggest books and movies you might like is based on algorithms that show:

Accepted Answer

A)   closeness of fit
B)   correlation
C)   regression analysis
D)   standard derivatives
E)   none of the above

Question 5

Create a relative frequency distribution for each network and then use them to make a recommendation to an advertising client for selling a youth sports program, beer, and a retirement community, and explain why.

Accepted Answer

The answer of Create a relative frequency distribution for each...

Question 6

Which of the following is NOT the primary goal of sport team analytics?

Accepted Answer

A)   to get more people to purchase season (or at least multiple-game)  tickets
B)   induce fans to actually use the tickets
C)   obtain customer credit card data
D)   find ways to have fans purchase ticket year after year
E)   none of the above

Question 7

Define correlation.

Accepted Answer

The answer of Define correlation....

Question 8

Imagine a box office manager reducing the price of a $100 ticket by 25% to help stimulate sales. Then a major event makes the game a must-have ticket and the same manager decides to raise prices of the discounted ticket by 25%. What will the ticket sell for?

Accepted Answer

A)   $105
B)   $100
C)   $98.25
D)   $93.75
E)   None of the above

Question 9

Assume someone offers you the following bet. She suggests that she and you toss two coins at a time. The possible outcomes would be 2 heads, 2 tales, or a heads and a tales. They suggest if two heads or two tales are tossed they win, but if one heads and one tales are tossed you win. They suggest that since you have one chance to win and they have two chances to win if you win they will pay you $1.00, but if they win you owe her 50 cents each time. She suggests that in the long run, you would be equal. Is she correct?

Accepted Answer

The answer of Assume someone offers you the following bet....

Exam 14: Data Analysis and Probability