The actual losses for 2014 to 2016 when compared to the calendar year premium returns 65% loss ratio. 2017 and 2018 actual losses return 64% and 63% which means they are still developing so if we multiply the premium for each year from 2017 till 2020 with 65% then you get the expected ultimate claims
This was so helpful!! Could you please upload the BF method as soon as you could and compare those methods. I believe it will be a very informative video.
I've been looking into a good way to do this but can't find anything. Just copy that upper left array and recreate the calculations! I promise there will be more of a benefit to you! :)