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Effective visualization of numeric data

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Occasional Contributor
Posts: 13

Effective visualization of numeric data

As part of my MS in Analytics course curriculum, recently I had an opportunity to discuss about effective visualization of numeric data. I wanted to share it with sas community.

 

When we are planning to visualize static or past data, histograms, pie charts, scatter plots, bubble plots, correlation matrix etc. works for conveying numeric data. However, if we are working on hour-by-hour data and if we need to make contingency plans, in scheduling equipment, buses, flights etc. these charts fall short.

In such cases, if multiple variables need to be represented and there needs to be quick management action, animation that represents equipment, people, and effect of delay of the whole situation works best. The following link provides the animation mentioned here.

 

Why do buses bunch?

 

In the example provided, a bus is delayed and people wait at bus stop(s) and as more people wait, the delay gets further. If there are only a few buses, the delay would be longer. If we need to communicate this situation to management, animation with people, buses, and bus route would work best to get their buy-in for additional resources such as buses, employees (budget) and so forth.

 

Recommendations for improvement: When the dollars and cents are depicted of losses or the impact to the community due to bus delays, it would be much more effective to influence city / town leadership to enlist their sponsorship for additional budget. Further investigation could be done on this chart for use in factories, airlines, or wherever there is equipment, resource, and people involved.

 

References:

 

Yau, N. (2013). Data points: Visualization that means something. 38-41, Indianapolis, IN: Wiley. ISBN: 9781118462195. 

Kirk, A. (2012). Data Visualization: A successful design process. Olton, England: Packt.

 

Anonymous (n.d.) Why do buses bunch?

http://setosa.io/bus/

 

 

 

Esteemed Advisor
Posts: 7,085

Re: Effective visualization of numeric data

@Murali11: I totally agree! Just the other day someone reminded me of a presentation I participated in at a MWSUG meeting a couple of years ago. It was about a data mining problem that I was able to solve by using a visualization of the data technique, namely watching a map of the US midwest population over time as incidents of fraud were being detected. see: http://www.sascommunity.org/wiki/Expert_Panel_Solution_MWSUG_2013-Tabachneck

 

Occasional Contributor
Posts: 13

Re: Effective visualization of numeric data

Mr. Art, I like the powerpoint presentation and  the illustration with Art's Kansas Fried Chicken. The problem that you have mentioned is an interesting one in the sense that it is a true "needles in haystack(s) situation".

 

Thank you for sharing it.

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