Challenge #17: Month-over-Month Retention Rate

[calvingao]

Challenge 17

[LorraineF]

Practicing some batch macros

[asultanov]

Spoiler

[Erin]

submission attached

[Bobbyt23]

Tricky little challenge for what I thought would be simple. Enjoyed it.

[aatalai]

slightly different numbers, more in methodology I think as when I did it manually for one month still got some variances

[Bren_Spill]

Spoiler

 

 

[Rhys_Cooper]

bit of a tricky one to deduce the required logic from the instructions but good macro practice

Spoiler

[vmazur24052020]

Batch Marco is little bit tricky in terms of input data grouping.

It looks like example data in the start file is wrongly calculated (# of open a/cs is not correctly calculated if you take 24-month rolling count).