Jude DaShiell <jdash...@panix.com> writes: > After having read through the org-mode info on spreadsheets several > times and having also read through the calc info a few times I have > not ben able to get pstdev() to produce anything but errors. Having > checked over the data in a table, I found a couple instances where > data values were missing so I expect this could account for the errors > by itself. In column 3 I put the formula =pstdev(@<..@>) and also > tried with =pstdev($3). What is the correct syntax? I wasn't sure > which if any would work after having done all of that reading. >
AFAIK, the sample standard deviation calc function for a vector is called vsdev and the population standard deviation is called vpsdev. Here is an example of calling them (as well as the vmean and vmedian functions): --8<---------------cut here---------------start------------->8--- * Calculate stats on a column | seqno | value | | |-------+------------+------------| | 1 | 0.34437004 | 0.49622740 | | 2 | 0.65321163 | 0.49569043 | | 3 | 0.17841555 | 0.22716774 | | 4 | 0.28259230 | | | 5 | 0.88476454 | | | 6 | 0.65279340 | | | 7 | 0.12817118 | | | 8 | 0.50326488 | | | 9 | 0.34985056 | | | 10 | 0.78586253 | | | 11 | 0.49569043 | | | 12 | 0.46154064 | | | 13 | 0.65004499 | | | 14 | 0.74102345 | | | 15 | 0.33181485 | | #+TBLFM: @2$3 = vmean(@2$2..@>$2) :: @3$3 = vmedian(@2$2..@>$2) :: @4$3 = vsdev(@2$2..@>$2) :: @5$3 = vpsdev(@2$2..@>$2) --8<---------------cut here---------------end--------------->8--- HTH. -- Nick
