An outlier series is an extreme deviation from the mean or a value far from most others in a set of data. An outlier represents a measurement that does not appear to follow the characteristic distribution of the rest of the data. These may be genuine properties of the data, or be due to measurement error or other anomalies. In order to best demonstrate the message of the chart, you may wish to designate a data point(s) as an outlier. Doing so will automatically adjust your chart scale according to the remaining data. The outlier will be placed on the nearest axis. And, an arrow will be placed next to the outlier indicating the direction of its true value.
1.Click on the Format Series Task Pane
2.Set one or more bubbles as an outlier.
The outlier will be placed on the nearest axis, with an arrow placed next to the outlier indicating the direction of its true value.