Visual Analytics - An Interaction of Sight and Thought - JMP
Visual Analytics - An Interaction of Sight and Thought - JMP
Visual Analytics - An Interaction of Sight and Thought - JMP
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Predictions rely on statistical models.<br />
Don’t let the terms statistical model or predictive model throw you. In concept, they’re<br />
quite simple, just like more familiar models <strong>of</strong> other types. Generally speaking, models<br />
are representations <strong>of</strong> things or events, which we use to examine <strong>and</strong> underst<strong>and</strong> those<br />
things or events when it isn’t possible or practical to observe or interact with them<br />
directly. Statistical models represent mathematical relationships between the parts that<br />
make up the thing or event. Predictive models are those that we can interact with to<br />
investigate the results <strong>of</strong> hypothetical conditions, such as by changing the values <strong>of</strong><br />
particular variables.<br />
Predictive models make it possible for us to do what some people call what-if analysis.<br />
What if such <strong>and</strong> such a condition existed or event occurred? What would happen as a<br />
result? Predictive models give us the means to predict what would probably happen<br />
(the probable outcomes <strong>of</strong> dependent variables) if particular conditions arose naturally<br />
or by intention (specified input values to one or more independent variables).