Question

find the average of 1hr 15mins,2hrs 20 mins,3hrs 25mins,4hrs.

please answer step by step

Answer 1

hey...

lets convert all of them into minutes
1hr 15mins = 75 mins
2hrs 20 mins = 140 mins
3hrs 25 mins = 205 mins
4hrs = 240 mins

Average = sum of observations / no.of observations

Average = 75 + 140 + 205 + 240 / 4
= 660/4
= 165 mins (or) 2hrs 45 mins