Hi,
You didn't tell us the formula you are using for frequency, so
If you are using COUNTIF then
=COUNTIF(A$1:A$9,C1)
No array needed and no check for the NA.
If you are using FREQUENCY thent ry the following array entered formula:
=FREQUENCY(IF(ISNA(A1:A9),"",A1:A9),C1:C4)
Where A1:A9 is your data, C1:C4 is your bin range.
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If this helps, please click the Yes button
Cheers,
Shane Devenshire