Dynamic AVG (3 Rolling Months)

[microwin88x]

Hello,

I have the following table:

• Period: Date Format: MM-YYY

Period	Total	Rental	Expenses	Key	FPC
02-2016	224	117	65	17	25
03-2016	243	130	66	18	29
04-2016	264	148	69	18	29
05-2016	259	146	71	19	22
06-2016	277	159	74	19	24
07-2016	295	174	77	20	24
08-2016	274	154	79	20	22
09-2016	262	140	80	20	21
10-2016	296	169	82	21	24
11-2016	295	168	84	21	22
12-2016	392	249	86	22	35
01-2017	287	155	87	21	23
02-2017	285	152	88	22	23
03-2017	301	163	90	23	24
04-2017	328	187	93	23	25
05-2017	350	201	95	23	31
06-2017	346	194	96	24	31
07-2017	368	215	99	24	30
08-2017	352	199	100	24	29
09-2017	336	182	101	25	27
10-2017	372	213	103	26	31
11-2017	300	149	104	25	22
12-2017	297	147	105	24	20
01-2018	320	150	110	26	25

What I need is to create a Bar Chart with the AVG from Last 3 Months for each Period.

For example:

That means that for Period = 01-2018 with Value = 106,33, I get that result because if we look in the table, we have:

Period	Expenses
11-2017	104
12-2017	105
01-2018	110

(110 + 105 + 104) / 3 = 106,33

So I need to do this for each Period.

Do you know how could I do that?

Thank you!!!

PS: I attach a Sample File. The Sheet I need to complete is the 3rd one: Data By Average Months.

[sunny_talwar · Accepted solution]

May be use this

=RangeAvg(Above(Sum({<Period>}Expenses), 0, vI_QuantityAverages)) * Avg({<Period = {"$(='>=' & Num(MonthStart(Max(Period), -vI_QuantityMonths+1)) & '<=' & Max(Period))"}>}1)

[microwin88x]

Thank you!!!