1min snip

Cortex cover image

146: Unusually Spiky

Cortex

NOTE

Using Process Control Charts to Identify Significant Changes

Using process control charts, J Wheeler provides a clever way of identifying changes in data. By calculating the average value and drawing a line on the chart, it becomes easy to spot anomalies. If there are six consecutive days above or below the average line, the chances of this happening randomly are less than 1%. This insight can be helpful when deciding when to bring up a topic to Mike.

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