Using rolling and staggering data points?

[Anonymous]

I'm attempting to do a calculation using a rolling 12 month number (2015-12 counts all of 2015) and then use that number for a calculation.

I also want to graph that calculation in 3 month increments without using filters, so that it won't undo the rolling 12 number by not having all 12 months. Is there any way I can do these 2 things?

[qlikviewwizard]

Can you attach some sample data and expected output?