Texas Instruments TI-Nspire CX User Manual page 25

Tab to the last slot
and then use Tab
This tell the calculator where
to put the answers. Choose a
column that does not already
have data in it because it will
override anything that is there
to get to [OK]
Leave these three alone
Leave Frequency at 1 and
leave the others blank
TI-Inspire manual 22
Leave "Num of
Lists" as 1
The [OK]
This tells the TI where
the data is you want the
mean of. columns
Tab to [OK]