SUMPRODUCT

[owensz-08]

Hi All,

Is there any way I can use sumproduct to count the number of times the difference between Column B and Column C is less than or equal to 1?

B-C <= 1

E.g.   =SUMPRODUCT(--( B2:B10 - C2:C10 <=1 ) ) [DOESNT WORK]

[#2]

@owensz-08 

If you don't have Microsoft 365 or Office 2021, confirm the formula by pressing Ctrl+Shift+Enter.

If you want to count the number of times the difference is less than or equal to one in either direction, use

=SUMPRODUCT(--(ABS(B2:B10-C2:C10)<=1))

again confirmed by pressing Ctrl+Shift+Enter if you have an older version of Excel.

[#3]

Thank you so much for your help.

One problem I am facing is some rows of C2:C10 are empty.
Is there anyway i can write the formula such that it can still auto-calculate without making changes to the data?

[#4]

@owensz-08 

How about

=SUMPRODUCT((C2:C10<>"")*(B2:B10-C2:C10<1))

[#5]

@HansVogelaar 

Hello, unfortunately it still gives an error "#VALUE!" 

Can anyone help to resolve this?

[#6]

@owensz-08 

Could you attach a small sample workbook demonstrating the problem (without sensitive data), or if that is not possible, make it available through OneDrive, Google Drive, Dropbox or similar?