I discovered a bug on my iPhone. The issue was around Daylight saving. Thanks to Dock I was able to take screenshots which was much better then photos.
In Calendar when you select 1am on the scrollers, you get 1am as the start time. When you select 2am, the start time goes to 1am. When you select 3am, it goes to 3am as expected.
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.
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.
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.
