Johny, trying to reduce, followed a certain diet
during the month of April.
He recorded his weight daily at 8:00, naked, using the same balance.
Some of his entries are given below:

Apr 3...........102.6 kg
Apr 8...........101.1 kg
Apr 14.........99.4 kg
Apr 18.........98.7 kg
Apr 22.........98.0 kg
Apr 28..........97.6 kg

Please provide your estimate of his average April weight.

(In reply to 2 remarks by Ady TZIDON)

Have a great trip.

1.  Good point.  Daniels first post and my second do give a rather implausible answer - same method despite the names.  I don't feel like looking into that right now but I may tomorrow.
My best fit line seems more reasonable.

2.  Thanks for clarifying.  We want the average weight for 30 days, not 30*24 hours. 

Posted by Jer on 2015-06-15 20:34:18