hi,
yes there is. several. i have never used them because i
never had a need. on the fomula bar, click the equal sign.
then click the down arrow that appeared to the left. from
the dropdown, click more functions. from paste function
box click statistical. scroll down to
=STDEV
=STDEVA
=STDEVP
=STDEVPA
i don't know how to use them, but there are examples.