University of Illinois
University of Illinois: Data Types
The University of Illinois provides this site that is helpful because of the various kinds of data that can be collected. This lesson plan helps students differentiate between qualitative, quantitative, and many other types of data.
Other
Mackie Mixers: Home Page
Mackie is one of the highest quality studio mixer manufacturers in the world. Here they provide information and pictures of their mixers and the features offered.
Math Is Fun
Math Is Fun: How to Find the Mean
This math tutorial illustrates the mean of a set of data.
Math Is Fun
Math Is Fun: How to Find the Median Value
This math tutorial provides an explanation of the median value for a groups of numbers.