LeighHutsell_DAT530_Unit1

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Electrical Engineering

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Jan 9, 2024

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Leigh Hutsell DAT 530 – Present & Visualize Data Unit 1 Assignment Real World Examples

VISUAL REPRESENTATIONS For this assignment I chose to look at the change in population for 10 randomly selected states: New York, Florida, Illinois, Tennessee, South Carolina, Kentucky, Utah, Nebraska, South Dakota, and Alaska from 1910 to 2010. The two visualization charts that I chose were a line graph and a bubble chart. The first bubble chart shows population in 1910 and the second bubble chart shows 2010.

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Where the line graph is direct and shows the trends, the bubble chart reflects the data in a more dramatic change from 1910 to 2010. AUDIENCE NEEDS AND DATA VISUALIZATION METHODS When thinking about the audience for your visualizations there are a lot of options. The audience can range from males or females to general public or the government. Since we are looking at population overall, we will look at the two audiences, the general public and the government. When looking at the general public the visualization would need to be something that can be easily understood without much explanation or data background. The line graph would be that visualization. Anyone who wanted to see how the population in their state has grown from 1910 to 2010 could very easily look at the line graph and see the growth for that state. If, for example, someone in the general public wanted to see how the population in Texas has changed over that 100-year time span they could quickly and easily see that Texas has grown from 4M to 25M over that time frame.

For the government you would want to assume that you are dealing with individuals that work with data daily and you would want to include more details in your visualizations. Utilizing a visualization such as the bubble chart adds an extra dimension of data and visualization. Not only will it show you the state that you are looking at specifically, but it will show you that state in comparison to all other states. You could set the visualization to automate the changes year after year or decade after decade. If you were to single out Texas, you could call out Texas by a different color and watch it move along with the growth in all other states. 1910 1950

1990 2010 Knowing your audience is very important because it will help you to understand who you are talking to and how you need to relay the information that you are presenting. “The first and most important consideration is your audience. Their preferences will guide every other decision about your visualization – the dissemination mode, the graph type, the formatting, and more,” (Emery, 2015).

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REFERENCE Emery, A.K. (2015) Tech Change: Why Your Audience Matters in Data Visualization. Retrieved from https://www.techchange.org/2015/05/21/audience-matters-in-data-visualization/