I'm working on an assignment that I can't seem to get my arms around. Basically, I have to supply values and count the number of entries, provide a sum for each number added,an average and standard deviation. Right now, I'm trying to correctly add each entry into the list and get the count, sum and average. For some reason, it doubles each entry within the LIst, so that if I provide one entry of '5', it adds it twice when getting the sum.
Please review what I have and provide any/all the help you can. Thank you.