Per CDE blueprint, this standard (Grade 6, Statistics, 1.1) is likely to be assessed with three test questions on the CAHSEE. This is one of the larger groupings. Two questions are likely to require finding the mean of a data set, and the third item will likely alternate between the median or the mode of a data set.
Online Practice: (http://mcpeak.co)
This lesson comes as a ".zip" package because the contents include printable PDF resources, as well as editable MS Word (".doc") versions, and an interactive quiz. The preview file can be downloaded to clarify; it includes a Contents page picturing and explaining each component.