How strong is an average 15 year old?

How to calculate the expected return and volatility for a portfolio of stocks? What is the probability of the same colour if a spinner is spun twice and the spinner has four colors? What is the sum of the frequencies in a frequency table? How do you calculate sales by state as percentage? What is the one of the first steps you can take to make a prediction? What does a score of 447 on the MAT equate to percentage? What is the approximate probability that a human offspring will be female? What data should not be stored in a file? How should I construct a confidence interval for the population proportion p with n equals 144 and x equals 82 with a 90 percent confidence level? Say someone used a line graph to show info about the number of CDs she owned by different arists.Is a line graph a good choiceto show data.... Why or why not? What jobs use some type of bar graph? What two numbers when multiplied equal -7 and added together equal 5? What is a scale on a line graph? What is the Average male IQ score? Why is it important to take a mean of several readings? Normal PSA Levels? What is the difinition of biostatistic study design? What is the name for a bar graph that shows data in ranges of equal length? What is the tally for histogram? How many average weeks are in a month?