I am using the following formula in Excel 2013:
=SUMIF(Text($A$10:$A$23,"ddd"),$S$2,$H$10:$H$23)
The error says I must must put an apostrophe(') first:
Can't work this out, can you help please:
FYI
$A10:$A23 is a date
$S$2 is = "Fri"
H10:H23 are Numbers to add when A10:A23 equals Fri
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