The difference between median & average are as follows:
Average: add up all the numbers and divide by the number of numbers. example: 2-5-8-10-14; add them up equals 39. Divide 39 by 5 and answer is 7.8.
Median: is the middle number or the average of the two middle numbers if there is no exact middle number. Example: 1-3-8-10-19; the middle number is the third number which is "8" which is the median. In this case the median has exactly two numbers on each side of it. Now if there is no middle number, such as 1-3-8-9-10-19 then average the two middle numbers, which would be an average of 8 and 9 which is 8.5. Remember to order all the numbers from low to high before you start computing the median. so if u have 10-1-23-18-0-5 you should order the numbers first as 0-1-5-10-18-23; in this case the median is 7.5
By the way the "mode" is the most frequent number in a set. In the above examples there is no mode. however if u had something like 3-6-6-6-8-9-14-14-21 the mode would be '6' because that is in the set three times and no other number has that great an occurrence.
I hope this helps.
I could look and tell you but there is not a real accurate figure because our MLS only counts from the beginning to the end of a particular listing it does not add to the days if the listing is relisted. Some agants may cancel and relist a property every 30 days. In Cincinnati the average last month was 90 days. Last February it was 85 days.