Making sense of student ERB test scores on a spread sheet can be daunting for some, and after staring at those numbers for a while, make one’s eyes a little blurry. Turning those numbers or any kind of numerical data into something more concrete, like a pie chart or bar graph makes it much easier to read and grasp. Taking it one step further and pairing up with other data could reveal some interesting patterns. For example, with the test scores I mentioned, when comparing them to other schools, what if we were able to include data on the size of the school as well. Would the results change? What is the statistical significance when comparing a school with one class per grade to one that might have 10 classes per grade. Does the sample size change the data set in a way that might be interesting? There are many other ways one can think about data and there has been quite a rise in what is called an infographic: taking the data, adding some design to it, and representing it in a way that can be visualized so it can be easier to understand.
In his TED talk below, David McCandless draws interesting conclusions from complex datasets and pairing them together. So instead of looking at simply what country has the biggest military budget, he might pair that with the country’s GDP and suddenly, the results are quite different. He also has a blog worth checking out called Information Is Beautiful. It’s definitely worth checking out.