By: Nasir Muhammad Munim

In reply to Avi.

Dear AVI,
We can assure you that if you followed the steps correctly, everything should be fine with the tutorial. Moreover, both of these formulas are single-cell output formula. So, the procedure for the array formula implementation or pressing CTRL+SHIFT+ENTER is not required here.
If you want to take all the data to find out the standard deviation without conditions or avoid taking the false as 0, you should have a look at our article How to Calculate Average and Standard Deviation in Excel.
Regards,
Exceldemy