Answer to Question 1
A parameter is a characteristic of a population; a statistic is a characteristic of a sample. An example of a parameter would be the proportion of all students who will vote for a particular candidate for student body president. An example of a statistic is the proportion of students in a sample who will vote for the candidate.
Answer to Question 2
By the empirical rule we could say 16 will be above 70 points. Thus a score of 70 points corresponds to the 84th percentile. Using a table or calculator to obtain the exact area to the left of a z = 1, we could report Greg's score as the 84.13th percentile.
Flower part number is a characteristic difference between monocots and eudicots
Difference between Asian (left) and African (right) elephant ears.
Different gene orders give different double recombinants
Fossils Give Us a View of Past Life
Here are images of live zebrafish that were studied for genetics and head size to give insight into
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...