Search Results
Search type | Search syntax |
---|---|
Tags | [tag] |
Exact | "words here" |
Author |
user:1234 user:me (yours) |
Score |
score:3 (3+) score:0 (none) |
Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
Views | views:250 |
Code | code:"if (foo != bar)" |
Sections |
title:apples body:"apples oranges" |
URL | url:"*.example.com" |
Saves | in:saves |
Status |
closed:yes duplicate:no migrated:no wiki:no |
Types |
is:question is:answer |
Exclude |
-[tag] -apples |
For more details on advanced search visit our help page |
History and philosophy of mathematics, biographies of mathematicians, mathematics education, recreational mathematics, communication of mathematics.
2
votes
Accepted
Understanding the rationale behind "batch means" estimation
The variance of the mean of $n$ random variables is
$\mbox{Var}(\bar{x})=\mbox{Var}(\sum_{i=1}^{n} x_{i}/n)$
$\mbox{Var}(\bar{x})=\sum_{i=1}^{n} (1/n)^{2} \mbox{Var}(x_{i})$
$\mbox{Var}(\bar{x})=n …
6
votes
Why are optimization problems often called "programs"?
When the term "linear programming" first came into use, computers were still very rare beasts, and the term "computer programming" wasn't that widely used. Here "programming" meant planning. As rese …