Help to create Average Productivity over time

Hello Everyone,

I need your Help generating a chart showing the average & Cumalative trend over time for a dataset.

Production Explaination:
In the production process, we create 1 Module, and this module is made up of 16 Skids. Each skid is considered finished when a specific activity is marked as 100% complete,my goal is to analyze our production data to understand the average & Cumalative trend for the number of skids we produce each month.

Dataset Explaination
To illustrate this, I have provided a link to the dataset we are working with,2 tables are interconnected through column (EquipmentId),1st table(ActivtiyLevelProgress) is having the ActivityDescription & Progress while the other column is having the 
CWP_or_Skid ,InstallationEnd & InstallationStart.

1st Table ActivityLevelProgress (highlight is the 2 Most important columns)

2nd Table Equipment ((highlight are the 3 Most important columns)

Link to Dataset
SampleDataset 

What do i need to do
I need to create a couple of measures 1 Monthly Average,1 total till date (Aggregation),dynamic time X Axis 

1- Dynamic time X-Axis based on InstallationEnd & InstallationStart which changes based on ActivityDescription.
2-Monthly Average Measure should count the Number of CWP_or_Skid that are finished based on ActivityDescription & Progress in every month while referring to a dynamic time X-Axis (InstallationEnd & InstallationStart)
 3-1 total till date (Aggregation) while counts the total number of CWP_or_Skid that are finished based on ActivityDescription & Progress in every month in an upward trend while referring to a dynamic time X-Axis (InstallationEnd & InstallationStart) 

Outcome chart would look like 

Dotted is the average & straight line is the

Your insights and expertise will be invaluable in this endeavor. 


amitchandak lbendlin Ahmedx parry2k Ritaf1983