Zune or zzz?

An interesting article in the local New Jersey paper this week. “Will Microsoft iPod-rival Zune be a ‘zoom’ or more of a ‘zzz’. This is Microsoft’s attempt to finally case in the 1.5 billion songs that have been sold online bt the Apple iTunes store. A comment from the article.

The Zune’s wireless function also taxes battery life. And Zun users – Zunies? – are in for some surprises when the actually try zapping songs to each other.
Those songs will deactivate in three days,or after three plays – whichever comes first.

I had a friend also tell me that the new Zune is not compatible with the upcoming Windows Vista. Now if that’s actually true, that’s amazing.

Tagged with: General Windoze

Producing Alternative Means statistics with SQL

Producing Alternative Means statistics with SQL

MySQL’s built-in AVG() computes the arithmetic mean — the sum divided by the count. That is the right default for many questions, but it is not always the right measure of central tendency.

Extending MySQL Capabilities with UDFs, Plugins and Components

Extending MySQL Capabilities with UDFs, Plugins and Components

MySQL offers three different approaches to extending the SQL capabilities with the default product you download and install. These are: User Defined Function (UDF) MySQL Manual MySQL Plugin MySQL Manual MySQL Component MySQL Manual For the purposes of this post I will be using the current LTS version MySQL 8.

Producing One-Sample Z-Test statistics with SQL

Producing One-Sample Z-Test statistics with SQL

The one-sample Z-test determines whether a sample mean differs significantly from a known population mean when the population standard deviation is also known. It is the appropriate test when the population parameters are established — quality control benchmarks, national averages, long-run process measurements — and you want to evaluate whether a new sample is consistent with them.