Visual Analytics - An Interaction of Sight and Thought - JMP

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Predictions rely on statistical models. Don’t let the terms statistical model or predictive model throw you. In concept, they’re quite simple, just like more familiar models of other types. Generally speaking, models are representations of things or events, which we use to examine and understand those things or events when it isn’t possible or practical to observe or interact with them directly. Statistical models represent mathematical relationships between the parts that make up the thing or event. Predictive models are those that we can interact with to investigate the results of hypothetical conditions, such as by changing the values of particular variables. Predictive models make it possible for us to do what some people call what-if analysis. What if such and such a condition existed or event occurred? What would happen as a result? Predictive models give us the means to predict what would probably happen (the probable outcomes of dependent variables) if particular conditions arose naturally or by intention (specified input values to one or more independent variables).
Good models don’t hide variables and their relationships. Inputs ? Outputs Most of the applications that I’ve seen marketed by business intelligence software vendors for predictive analytics allow data to be entered on one end (inputs) and then results (outputs) pop out the other; what goes on in between remains hidden in a black box. Unfortunately, without seeing what goes on in that black box, our brains aren’t fully engaged in the process and too much is missed. Predictive analytics are most revealing when they allow us to see how all the variables that contribute either directly or indirectly to the outcomes that concern us relate to those outcomes and to one another. To understand these relationships, we must see them; we must watch how changes in one variable directly cause or indirectly influence changes in the others. For this to happen, predictive models must be displayed visually in a way that allows: (1) our eyes to see the relationships and changes; and (2) our minds to make sense of them.
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Visual Analytics An Interaction of
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Hurray data! Hurray technology! We
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Upon this gifted age, in its dark h
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We must tap into that steady stream
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Data analysts JMP are now sexy. Dat
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To do this we need the right skills
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Two of the right skills • Statist
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What is visual thinking? Temple Gra
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We need greater balance. Modes of r
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Leonardo da Vinci For some four hun
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Complex problems require visual thi
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Tools extend our reach when they’
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Can computers replace us? Our brain
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Visualization empowers statistics.
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“I see!” There is an intimate c
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Vision is our dominant sense. 30% 7
Page 34 and 35: Trends, patterns, and exceptions co
Page 36 and 37: This visualization fails to do this
Page 38 and 39: The right balance 38 Information vi
Page 40 and 41: Many visualization tools feature de
Page 42 and 43: Bling your graph. Many software ven
Page 44 and 45: 3-D graphs are rarely useful. One o
Page 46 and 47: Even when there’s a 3 rd variable
Page 48 and 49: We don’t want to confuse people w
Page 50 and 51: Good visualizations and good visual
Page 52 and 53: This arrangement is even better yet
Page 54 and 55: Visual perception works according t
Page 56 and 57: Visual perception is not just camer
Page 58 and 59: Two essential activities • Multi-
Page 60 and 61: Data analysis requires rapid intera
Page 62 and 63: Key interactions of visual analysis
Page 64 and 65: Shneiderman’s Mantra “Overview
Page 66 and 67: Overview first, zoom and filter, th
Page 72 and 73: Attention is limited. Ever saw a ma
Page 74 and 75: Capacity = 3 or 4 chunks at a time
Page 76 and 77: Good analysis tools augment memory
Page 78 and 79: More dimensions through multiple vi
Page 80 and 81: Coordinated views expand what we ca
Page 82 and 83: Analytical challenges demand statis
Page 86 and 87: Finding and understanding the stori
Page 88 and 89: Wisdom Knowledge Information Inform
Page 90 and 91: O perpetual revolution of configure
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Visual Analytics - An Interaction of Sight and Thought - JMP

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