One of the hallmarks of visual analysis is trend. Trend refers to the direction of data as it changes across time. A trend line is often superimposed on a data set which behavior analysts then interpret. However, if the data are placed on a standard celeration chart a trend line is transformed to a celebration line. The celeration line quantified how fast a behavior is changing. The quantified line allows an objective evaluation of not only the direction but the precise numeric growth or decay rate of a behavior. Discussion surrounding the benefits to clinical work and research with a quantified trend line is discussed. 

 

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