Microsoft Office Tutorials and References
In Depth Information
Summing Formulas
Figure 7-14 shows this formula at work.
Figure 7-14: Using an IF function to hide cumulative sums for missing data.
The workbook cumulative sum.xlsx is available on the companion CD-ROM.
Summing the “top n” values
In some situations, you may need to sum the n largest values in a range — for example, the top
ten values. If your data resides in a table, you can use AutoFiltering to hide all but the top n rows
and then display the sum of the visible data in the table’s Total row.
Another approach is to sort the range in descending order and then use the SUM function with an
argument consisting of the first n values in the sorted range.
A better solution — which doesn’t require a table or sorting — uses an array formula like this one:
{=SUM(LARGE(Data,{1,2,3,4,5,6,7,8,9,10}))}
This formula sums the ten largest values in a range named Data. To sum the ten smallest values,
use the SMALL function instead of the LARGE function:
{=SUM(SMALL(Data,{1,2,3,4,5,6,7,8,9,10}))}
These formulas use an array constant comprising the arguments for the LARGE or SMALL
function. If the value of n for your n calculation is large, you may prefer to use the following
variation. This formula returns the sum of the top 30 values in the Data range. You can, of course,
substitute a different value for 30.
{=SUM(LARGE(Data,ROW(INDIRECT(“1:30”))))}
 
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