Thanks Al, I knew someone out there will have an answer. I need a liitle more clarification, the example says :

******************** Example
2) If n is odd, take the middle value as your median - the (n+1)/2 value.

3) If n is even, it's the same basic formula, except you average the two middle values,
add the n/2 point + (n+2)/2 point and divide that sum by 2. IOW, the mean of the 2 middle values.

EX: 1,4,8: 4 is the median

EX: 1,4,7,8: 4+7/2 = 11/2 = 5.5 is the median
*****************************************************

How would an example look if the data was 1,3,5,8,9,13,21,35,45 ???
Your help will be appreciated.
Shafid