My MacBook

I arrived home last night at midnight from San Francisco to a pile of mail and a number of packages. My shiny new MacBook had arrived. It was rather ridiculous that I wanted a HDD upgrade and I could no buy it in the store. They come with 160GB and have only one upgrade option to 250GB.

Nevertheless, I’m now trying to familiarize myself with Mac OS/X 10.5 (Leopard) which is rather foreign as I’ve never used a MacBook before.

So what was my motivations? After Hacking my iPhone I wanted to do more, and even try and write an app, so I needed a Mac OS. I actually wanted a MacBook when I first joined MySQL last year, but my request was not approved (“You have to be able to run Windows” was the response, and yes I told them it can run windows).

Combined with a my Q3 Bonus, I just had to have one. This has been a number of significant purchases in recent months, an iPhone and a Canon 40D . All I need now is a girlfriend and my bank balance will be in more serious trouble.

Tagged with: Apple IPhone MacBook

Producing IQR and Outlier statistics with SQL

The interquartile range (IQR) measures the spread of the middle 50% of a distribution — the distance between the first quartile (Q1) and the third quartile (Q3). Combined with Tukey’s 1.

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The mode is the value or values that appear most frequently in a dataset. Unlike the mean or median, it applies naturally to categorical and ordinal data — star ratings, product codes, survey responses — and reveals what is most common, not what is average.

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