Hi,

I searched the standard error formula in Excel Help and found this:

I tried the formula using this data set:

1

2

3

4

5

and the result is **1.65831**. This is wrong, because the standard error should be
**0.70711**.

I know that the standard error is equal to the sample standard deviation over the square root of the size of the sample. If I use this formula, the result is
**0.70711**.

Can anyone help with the formula in Excel Help? Thanks in advance.