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Best Fit Lines & Curves by Alan R. Jones

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3 Trendsetting with some Simple Moving Measures

Whenever we are faced with data that changes over time or over some other ordered sequence such as a build number, we usually want to know whether there is any underlying trend: going up, coming down or staying put. There’s a variety of Moving Measures that can help us.

3.1 Going all trendy: The could and the should

Very rarely are we provided with the luxury of data with a totally smooth trend. It is more usual for us to be presented with data that is generally smooth but which is also characterised by what appears to be a degree of random behaviour. Failing that, the data might even resemble a random scatter similar to a discharge from a shotgun.

Faced with one of three scenarios, we might respond ...

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