I'll make this short and brief.
Here's what works:
{AVERAGE(IF(ISERROR(D4:P4),"",D4:P4))}
Here's what I want to do (but doesn't work):
{AVERAGE(IF(ISERROR(D4:P4,U4:AG4),"",D4:P4,U4:AG4))}
What am I doing wrong? I want to be able to ignore all errors when calculating an average for multiple (2) ranges (D4:P4 and U4:AG4, not just D4:P4).
Thanks in advance for the help.
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