Merge "Fixed a variance calculation"
authorYaowu Xu <yaowu@google.com>
Tue, 30 Jun 2015 19:48:32 +0000 (19:48 +0000)
committerGerrit Code Review <noreply-gerritcodereview@google.com>
Tue, 30 Jun 2015 19:48:33 +0000 (19:48 +0000)

Trivial merge