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  2. Tracking signal - Wikipedia

    en.wikipedia.org/wiki/Tracking_signal

    where a t is the actual value of the quantity being forecast, and f t is the forecast. MAD is the mean absolute deviation. The formula for the MAD is: = | | where n is the number of periods. Plugging this in, the entire formula for tracking signal is:

  3. Forecast error - Wikipedia

    en.wikipedia.org/wiki/Forecast_error

    If a main application of the forecast is to predict when certain thresholds will be crossed, one possible way of assessing the forecast is to use the timing-error—the difference in time between when the outcome crosses the threshold and when the forecast does so.

  4. Mean percentage error - Wikipedia

    en.wikipedia.org/wiki/Mean_percentage_error

    where is the actual value of the quantity being forecast, is the forecast, and is the number of different times for which the variable is forecast. Because actual rather than absolute values of the forecast errors are used in the formula, positive and negative forecast errors can offset each other; as a result, the formula can be used as a ...

  5. Symmetric mean absolute percentage error - Wikipedia

    en.wikipedia.org/wiki/Symmetric_mean_absolute...

    where A t is the actual value and F t is the forecast value. The absolute difference between A t and F t is divided by half the sum of absolute values of the actual value A t and the forecast value F t. The value of this calculation is summed for every fitted point t and divided again by the number of fitted points n.

  6. Data analysis - Wikipedia

    en.wikipedia.org/wiki/Data_analysis

    [6] [7] Predictive analytics focuses on the application of statistical models for predictive forecasting or classification, while text analytics applies statistical, linguistic, and structural techniques to extract and classify information from textual sources, a species of unstructured data. All of the above are varieties of data analysis. [8]

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  8. Comparison of spreadsheet software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_spreadsheet...

    The operating systems the software can run on natively (without emulation).Android and iOS apps can be optimized for Chromebooks and iPads which run the operating systems ChromeOS and iPadOS respectively, the operating optimizations include things like multitasking capabilities, large and multi-display support, better keyboard and mouse support.

  9. Gap analysis - Wikipedia

    en.wikipedia.org/wiki/Gap_analysis

    Gap analysis can identify gaps in the market. Thus, comparing forecast profits to desired profits reveals the planning gap. This represents a goal for new activities in general, and new products in particular. The planning gap can be divided into three main elements: usage gap, existing gap, and product gap.