rowVar
Syntax
rowVar(args…)
Please see Row-Based Functions for the parameters and calculation rules.
Details
Calculate the (sample) variance of each row of the arguments.
Examples
$ m=matrix([4.5 2.6 1.5, 1.5 4.8 5.9, 4.9 2.0 NULL]);
$ rowVar(m);
[3.453333,2.173333,9.68]
$ t1=table(1..5 as x, 10..6 as y, take(3, 5) as z);
$ t2=table(5..1 as a, 6..10 as b, take(8, 5) as c);
$ rowVar(t1);
[22.333333,14.333333,8.333333,4.333333,2.333333]
$ rowVar(t1[`x], t2, 1 1 2 2 2);
[9.7,9.3,8.7,11,14.7]
$ t=table(`AAPL`MS`IBM`IBM`C as sym, 49.6 29.46 29.52 30.02 174.97 as price1, 175.23 50.76 50.32 51.29 26.23 as price2);
$ select sym,rowVar(price1,price2) as var from t;
sym |
var |
|---|---|
AAPL |
7891.44845 |
MS |
226.845 |
IBM |
216.32 |
IBM |
226.20645 |
C |
11061.7938 |