The data items below are the ages of U.S. presidents at the time of their first inauguration. Organize the data in a frequency distribution. Use the table to find the mean age, median age, modal age, and midrange age of the presidents when they were inaugurated. Solution The mean is an average, so add all of the numbers together then divide by 43. you should come out with 55. median is the middle number after you have put all the data in numerical order. Here, it is 54 Modal is what number(s) occur the most often. this set has 2 numbers:51 and 54, both numbers occur 5 times the midrange is the average of the highest and the lowest number: (42+69)/2= 55.5.