Statistics - Descriptive Statistics Projects

In each of the following, identify the individuals and the variable of interest, and classify the variable

In each of the following, identify the individuals and the variable of interest, and classify the variable as categorical or quantitative:
Lengths of drives using Top Flite golf balls
Attendance at college baseball games
Species of plants living in the southwestern United States
Ranks of U. S. Naval personnel
Time in the 100 m dash for Olympic athletes
The following are the 100-meter freestyle times for a group of 15 high school athletes, in seconds.
56.64 57.74 56.72 57.06 55.89
56.66 58.36 56.97 57.41 54.87
56.68 56.12 55.86 54.26 56.34
- Find the mean and median of these times.
- Find the variance and standard deviation of these times.
- Construct a stemplot for these times.
Here are the salaries of 30 Division 1-A assistant basketball coaches.
49333 51392 52358 53895 54076
54540 56769 59447 59522 59768
61374 61880 62457 63313 63916
64810 65378 65850 67412 68163
69172 69381 70128 71193 71642
71702 75690 76550 77576 81319
- Find the five-number summary for this data.
- Explain to a statistics challenged friend how you would construct a box plot for these data.
- Do there appear to be any outliers? Why do you say that?
On the average, there are 500 mg of aspirin in an "Extra Strength" aspirin tablet. Suppose the random variable assigning amount of aspirin in a tablet is normally distributed with standard deviation 30 mg.
- What proportion of extra strength aspirin tablets can be expected to contain between 475 and 525 mg of aspirin?
- If you purchase a 100-tablet bottle of extra strength aspirin, about how many of them would contain more than 530 mg of aspirin?
- How much aspirin would a tablet have to contain to be in the top 5% of the aspirin content range?