Question: how to find the average of minutes and seconds?
Answer: Convert all times to seconds (1 minute = 60 seconds) i.e. 2:42 seconds would be 162 seconds.
Sum all seconds. ... 
Divide sum by # of entries. ... 
Divide sum by 60 (60 seconds in every minute) ... 
This does not mean that your answer is 2 minutes and 4 seconds. ... 
Your answer would 2:02 as an average time.