PA - Formula Indicator - Quiz Question issue...

[MichaelP1]

Hi all,

I'm currently studying Performance Analytics (PA) Fundamentals On Demand, and have come across a quiz question that I'm just not grasping.

I get that a Formula Indicator is the result of using two or more indicators to calculate deeper insight... 

My question relates to the wording of the quiz question on the topic "Formula and Manual Indicators" > "Formula Indicator Examples"...  The question is "Which of the following REQUIRE a Formula indicator?" (emphasis added)

For me the answer "Fraction of Problems that are Known Errors" doesn't fit this criteria... If the question specified 'closed' or 'new' I understand the logic behind the question - but for me it doesn't suit... let me explain;

OOTB there are indicator sources of Problem.open Problem.new and Problem.closed.

If you have an indicator source of "Problem.all" (that doesn't differentiate between open/new/closed) and add in an indicator & breakdown of "known error"... would that not work as well??

Why does it REQUIRE a Formula Indicator??

Can someone explain to me why my method would not work?
(yes, I understand the performance hit that having a source of '.all' would entail - I know it's not best practice, but that's not necessarily linked to the question.)

[Edit: this question was intended to be posted to https://www.servicenow.com/community/training-and-certifications]

[Mark Manders · Accepted solution]

You want to see the fraction. If you just take the 'all' and have a breakdown of known errors, you will get all (let's say '1000') and all 'known errors' when applying the breakdown (let's say '200'). But it doesn't give you insight in how this is over time. If you have a formula of 'known errors'/'all', it will show you 20%. It will show you in one view what the result is, instead of checking on it by applying breakdowns.