Bin the data collected in Exercise 25 of Section 3.1. Then make a frequency table, and draw a histogram of the distribution. What is the mean of the distribution? What is the median of the distribution? An old theory says that, on average, the navel ratio of humans is the golden ratio: 11 + 152/2. 

Does this theory seem accurate based on your observations?

Exercise 25 of Section 3.1

The navel ratio is defined to be a person’s height divided by the height (from the floor) of his or her navel. An old theory says that, on average, the navel ratio of humans is the golden ratio: (1 + √ 15)/2. Measure the navel ratio of each person in your class. What percentage of students have a navel ratio within 5% of the golden ratio? What percentage of students have a navel ratio within 10% of the golden ratio? Does the old theory seem rel iable?