In statistics, it can be difficult to provide a specific answer to a question because of the variation present in the data. Statistical analysis allows us to organize data in different ways so that we can draw out potential patterns in the variation and give better answers to the questions posed.
The following Interactive Activity allows you to review and compare the various representations of data we have explored, both graphical and tabular.
This activity requires the Flash plug-in, which you can download for free from Macromedia's Web site.
It's important to note that several kinds of answers can be given when there is variation in your data. Some answers may be stated as intervals, and some answers, like the mode and the median, use a specific value to represent all the different data values.