Time-Series Analysis Step 6, Comput the estimate where does the MR value of 2.14 come from
Sharon Reed
10 Posts


Where does the MR value shown below as 2.14 come from?

Please let me know as it doesn’t make sense if you look at the MR table.

Thank you.

Best Regards,

Sharon Reed

Quality Engineer

ADVANCED Motion Controls®

3 Replies
Sharon Reed
10 Posts

@Sharon Reed
This is the MR table I am referring to


Hi Sharon,

2.14 is the average of the moving range values. In this case sum up the individual MR values and you get 15. Divide that by 7 and you get 2.14.


Sharon Reed
10 Posts

@Jeffrey Hanson
Thank you very much. Sometimes it is clear where the information is coming from and sometimes it is not.