stdevp( ) appears to be mislabeled

[Wes Loewer]

(06-05-2016 09:57 PM)Mike Elzinga Wrote:  I have a TI-89 Titanium; and I just checked.
The TI-89 has stdDev (division by N-1) and stDevPop (division by N).

Interesting. Apparently stDevPop() was added to the 89 in OS 3.10, but was not present in 2.09. (The function could be added by installing the Stats App.)

And just to clarify in case anybody's wondering, on the 84+, you can calculate the population standard deviation using 1-Var Stats, but there's not a population standard deviation "function" that corresponds to the sample standard deviation function, stdDev().