Help with Excel formulas

I have attached the sheet I am using and there are formulas that I don't understand. Can anyone please help out and tell me what they mean?

=$C$8*(1+C9)

=IFERROR(J16/$K$14,0)

=IF($K16<>"",(D16/100)/$K16,"")

=IF(SUM(N16:R16)>0,AVERAGE(N16:R16),IF(SUM(C16:R16)>0,AVERAGE(C16:R16),0))

=IF(S16<>0,RANK(S16,$S$16:$S$53),"")
smuralisankarAsked:
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SimonCommented:
>I have attached the sheet I am using
No sheet attached to your question. Please post it.

=$C$8*(1+C9)
Multiple absolute cell reference C8 by the result of adding 1 to the value of cell C9 (relative cell reference )

=IFERROR(J16/$K$14,0)
If dividing 16 by the value of K14 results in an error value, use 0 as the result

=IF($K16<>"",(D16/100)/$K16,"")
If K16 is not empty, divide the result of D16 over 100 by K16, otherwise use empty string("") as the result

=IF(SUM(N16:R16)>0,AVERAGE(N16:R16),IF(SUM(C16:R16)>0,AVERAGE(C16:R16),0))
If the sum of range N16:R16 is greater than zero, get the average, otherwise, get the average of C16:R16 if the sum of that range is greater than zero. If neither range is greater than zero, return zero as the result.

=IF(S16<>0,RANK(S16,$S$16:$S$53),"")
If S16 is not equal to zero, get the rank of that value within the range from S16:S53, otherwise, use empty string as the result.
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smuralisankarAuthor Commented:
I did attach it but it did not show up. Anyways, here is another link:
https://www.dropbox.com/s/qaakkpm1rj0ojn1/AttributionModel_Sample.xlsx?dl=0

This sheet needs to be passed around to several people who will be working on it and they will look up the formula and will get confused by it. I need to simplify this and create a much simpler formulas to do the same thing. I would really appreciate some help here.
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SimonCommented:
I'd suggest that rather than attempt to simplify the formulas, which are not over-complex, you add the explanatory text (such as I provided above) in comments on the sheet.

If you simplify the formulae, you'd have to add more cells/rows/columns to the sheet to achieve the same end result.
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smuralisankarAuthor Commented:
Ok. I don't quite understand the sheet myself. If you could explain it to me, I can add in my own input to it and explain it to everyone else.

Thanks
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ozoCommented:
Perhaps you should start by explaining the purpose of the calculations.
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smuralisankarAuthor Commented:
This is an attribution model. As you can see in the sheet (link), the purpose it to assign a rank and measure the effectiveness of each channel/site we are advertising on based on different attribution models.
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scsymeCommented:
One simplification that you might consider is making use of named ranges in place of absolute references. This can result in formulae that are easier to make sense of.
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scsymeCommented:
Attached is an example for the first case in your list. Cell C8 is named BaseThreshold and cell C9 is named GreenThreshold. The formula in cell D9 now reads
=BaseThreshold*(100%+GreenThreshold)

Open in new window

I also changed the 1 to 100%, which has no mathematical impact but makes it clearer that you're working with a percentage.
AttributionModel-Sample.xlsx
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