WORK SAMPLE
GRAPHICAL & STATISTICAL ANALYSIS It has been said that there are three kinds of lies: small lies, big lies, and statistics. Formal statistical inference methods (i.e., those that can be used to calculate statistically significant predictions at specified confidence levels) yield misinformation when the data has not been collected in conformance with the Central Limit Theorem. However, numerical data can yield a lot of useful information by graphical analysis methods such as histograms, pie charts, and plots of behavior over time.
ANALYSIS OF USA PRISONER POPULATION TRENDS
ANALYSIS OF GLOBAL POVERTY DISTRIBUTION
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WORLD ENERGY PRODUCTION (1968 - 2003)
YIELD OF A CHEMICAL PROCESS
Sinusoidal fit (red line) to production record of 210 consecutive yield values (blue dots). Fit calculations and plotting done with CurveExpert 1.3. The data is from Box, Hunter, and Hunter, Statistics for Experimenters, Wiley, 1978, pages 32-33. |