Page History
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Signal type | Related analysis group | Description |
Spikes & drops | Detected using the Outliers analysis | Sudden increases or decreases in the metric. For example, a lot of extra visits occurred on the product page of your website yesterday. |
Breakouts | Outliers | Successive increases (called Prolonged Spikes) or successive decreases (Prolonged Drops) in metric.For example, chocolate sales going up the entire week before Valentine’s day is a prolonged spike. |
Step changes | Outliers | Shifts in data that move up or down from a relatively stable range, to a new stable range. Lines fitted to these ranges resemble steps, i.e. a series of flat surfaces connected via transitions between the flat surfaces. A Signal is recorded when there is a marked shift up or down (Step Up or Step Down). For example, the stock price for a given company may be trading in a relatively stable range. A positive quarterly result may result in the transitionary period where the stock trades higher, and then re-establishes itself at a new, higher range. This would be recorded as a step-up signal. |
Change in trend | Trend change | A trend line changes from up to down, or vice versa. For example, PC sales were growing but then started to decline last month. |
Change in volatility | Trend change | Volatility describes how much the value changes from one period to another. For example, the share price becomes very volatile after news that the trade deal was cancelled. |
Change in Total (one period to another) | Period comparison | Compares the total this week, month, quarter with another similar period - last week, month, this quarter last year. |
New lost attributes | Period comparison | Significant attributes that entered or left the data this period. For example, a customer that bought every month stopped buying this month. |
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