Methods and apparatus for ascertaining trends in network activity data are disclosed. A plurality of trend indicators is calculated for a plurality of values of a metric associated with network activity for a network content provider. The trend indicators include one or more moving averages of the plurality of values of the metric, and one or more standard deviation values of the plurality of values of the metric. A time-series graphical overlay representation of the plurality of values of the metric and the plurality of trend indicators demonstrating a relationship between the metric values and the trend indicators is displayed.