To make this work you first need to start your Excel formula with the SUM Index Match.
So it will look something like this: =SUM(INDEX(Array, Row_Num, Column_Num))
The Array will be your table of data, the Row_Num will be blank and the Column_Num will be the column number where you want to SUM the values.
When we dissect the formula (by highlighting the INDEX function and pressing F9) we can see that the following is happening: =SUM({8959;7840;7507;6690;5802;5487;3949;3836;3587;3210})
So in effect, we are summing the array of values within the table. See the example below that shows you how this is done.
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STEP 1: We need to place first the INDEX function inside the SUM function.
=SUM(INDEX
The Index arguments:
Table of Contents
array
What is the range/table?
Reference the range of cells here that we want to get the values from:
=SUM(INDEX($C$12:$E$21,
row_num
What is the row number we want to return?
We do not need to return the row, as we want to just sum all of the sales. Leave the row number blank:
=SUM(INDEX($C$12:$E$21,,
column_num
What is the column number we want to return?
Since we want the sales column, this is column number 2. So place in 2:
=SUM(INDEX($C$12:$E$21,,2))
Instead of providing column_num, you can also use the sum with index match function!
Now you are able to get the Total Sales:
STEP 2: Now let us try how we can use this with the AVERAGE function. We need to place first the INDEX function inside the AVERAGE function.
=AVERAGE(INDEX
The Index Function Excel arguments:
array
What is the range/table?
Reference the range of cells here that we want to get the values from:
=AVERAGE(INDEX($C$12:$E$21,
row_num
What is the row number we want to return?
We do not need to return the row, as we want to just average all of the units. Leave the row number blank:
=AVERAGE(INDEX($C$12:$E$21,,
column_num
What is the column number we want to return?
Since we want the units column, this is column number 3. So place in 3:
=AVERAGE(INDEX($C$12:$E$21,,3))
Instead of providing column_num, you can also use the index match sum or index match sum multiple rows!
Now you are able to get the Average Units Sold:
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John Michaloudis is a former accountant and finance analyst at General Electric, a Microsoft MVP since 2020, an Amazon #1 bestselling author of 4 Microsoft Excel books and teacher of Microsoft Excel & Office over at his flagship MyExcelOnline Academy Online Course.