You invested $4,500 in a project which gave you a return of 13.5% the 1st year.You were quite happy, but the 2nd year wasn't as good.You lost 4.9% that year.The 3rd year was better - you made 6% onthis investment.What was your annual average rate of return over the three years?

If the middle68% of the 7th graders kids in a school are in the range of 5' 3"and 5' 8", what is the standard deviation (in inches)? Note:Assume Normal Distribution as 68% is typically used for Normal Distribution.

In order to study the effectiveness of a training program,PresidentKirkman randomly picks 5 employees and records the respective time taken in assembling Part K.If the times are7, 8, 9, 7, and 11 minutes, what is the standard deviation?

Given the 5-number summary8,25,30,60, 75,What is the Inter Quartile Range?

Mr. Finch has 8 plants in his backyard.These are11.7, 9, 4.1, 12.7, 7.2, 8, 3.2 and 8.6 feet tall.What is the 25th percentile?Hint:Do the way we did in the class, not the way our book has done.

The 5-number summary for test # 2 is 18.4, 52.8, 59, 65.5, and 84.1.What is the left whisker?

The 5-number summary for test # 2 is 28.7, 51.6, 67.9, 70.1, and 86.4.What is the right whisker?

The average closing price of a stock has been calculated to be $14 and the corresponding variance to be $473.What is the coefficient of variation?

Using Chebysheff's theorm, you have concluded that at least 71.56% of the 2,797 runners took between 60.9 and 72.4 minutes to complete the 10km race.What was the standard deviationof these 2,797 runners?

What will be the range for the 8 students who make 4.5, 13.8, 9.5, 16.3, 12.8, 10.6, 18.5, and 12.4 dollars / hour?

You went shopping and bought 5 itemsthe prices of which are$7, $9, $10, $6, and $7. What is the standard deviation?

2,542 runners who took part in a 10km race had an average time of 1 hr and 11 minutes.The standard deviation was 12 minutes.Using Chebysheff's theorem,determineat least how many runnershad a running time between53 minutes and 89 minutes?