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
