Brendan Schwartz - Master-Master Replication with MySQL
b> CHANGE MASTER TO master_host='127.0.0.1', master_port=13306, master_user='replication', master_password='replication_password', master_log_file='mysql-bin.000001', master_log_pos=106;
mysql  master  replication  sql  master-master 
december 2011
A/B Testing Tech Note: determining sample size - (37signals)
We’re going to leave n null, since that’s what we’re solving for. p1 and p2 are set based on our baseline conversion level (10% in our example) and the sensitivity we’re trying to detect (a 10% difference vs. baseline conversion, or 11% in our example). We want a two-sided alternative, because we’re interested in testing whether the variation is either higher or lower than the original.
september 2011
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