Find Average Time per Month

[ADEI20]

Hi, 

I want to find an average time for one stage to another per month. I have this data below which are the date and time of each stage, the reference number that is the client, and the stage of this process, the stages are not necessarily in numerical order. If someone could show me how to calculate it on DAX or Power Query I appreciate it. 

Date	Reference Number	Which stage is the current property at
24/08/2021 11:54	33156000013	Stage 5 - Completion
07/09/2021 10:42	10626000014	Stage 1 - New Starts/Fee Letters
07/09/2021 11:11	10626000014	Stage 1 - New Starts/Fee Letters
09/09/2021 08:37	10640000050	Stage 1 - New Starts/Fee Letters
09/09/2021 10:58	10638000038	Stage 5 - Completion
09/09/2021 14:48	10626000014	Stage 4 - Enquiries
13/09/2021 11:19	33456163045	Stage 4 - Enquiries
16/09/2021 09:10	33456100283	Stage 4 - Enquiries
20/09/2021 12:22	33139000070	Stage 1 - New Starts/Fee Letters
21/09/2021 09:27	33456174033	Stage 4 - Enquiries
07/10/2021 09:07	33456140033	Stage 3 - Info Sheet
14/10/2021 16:57	33456140033	Stage 4 - Enquiries
04/11/2021 17:05	10640000050	Stage 2 - Packs
09/11/2021 16:55	33456140033	Stage 4 - Enquiries
23/11/2021 09:00	33456140033	Stage 4 - Enquiries
01/12/2021 12:28	33456174033	Stage - Other
02/12/2021 10:38	10626000014	Stage 4 - Enquiries

[v-henryk-mstf]

Hi @ADEI20 ,

I don't seem to quite understand what you are looking for. For stage1, can you give an example of how to find the average time for the corresponding month based on the given result table.

Looking forward to your reply.

Best Regards,
Henry

[ADEI20]

Hi @v-henryk-mstf The time of each stage is the time of the current until the next stage time. Stage time = Next stage time (in chronological order) - current stage time (in chronological order). Note: the stages are not necessary in order, e.g. the process can start in stage 1 and the next would be stage 4. 

[PijushRoy]

Hi @ADEI20 

Based on above data, what is your output date, please provide

[ADEI20]

Hi @PijushRoy was on 02 Dece 2021 at 11am. 

[ADEI20]

Hi @PijushRoy  I would like to have an output as below, with the average time (in minutes) by Stage, by month. Thanks

Stage 1	Avg Time	Avg Time	Avg Time	Avg Time	Avg Time
Stage 2	Avg Time	Avg Time	Avg Time	Avg Time	Avg Time
Stage 3	Avg Time	Avg Time	Avg Time	Avg Time	Avg Time
Stage 4	Avg Time	Avg Time	Avg Time	Avg Time	Avg Time
Stage 5	Avg Time	Avg Time	Avg Time	Avg Time	Avg Time
Stage - Other	Avg Time	Avg Time	Avg Time	Avg Time	Avg Time
	Aug-21	Sep-21	Oct-21	Nov-21	Dec-21