Below is a star plot of crime rates in different cities around the US. Star plots are fairly complex to understand, but they are essentially used as a technique for graphical data anylsis. These various shapes represent specific data in a unique form.
Sunday, July 6, 2008
Correlation Matrix
Similarity Matrix
Stem and Leaf Plot
Box Plot
Box plots are most often used in statistics in order to display data indicating symmetry and central tendency. The below graph gives us a median of scores on a test by amount of anxiety. Surprisingly, this graph indicates that the students with the highest anxiety level scored better had a higher median than the other students with lower anxiety levels.
Histogram
Parallel Coordinate Graph
Triangular Plot
Wind Rose
Climograph
A climograph is a bar graph and line graph that show monthly averages of temperatures and precipitation for a specific location. The below climograph of montreal allows us to gather data, such as:
- The average temperature 6.5°C
- Temperature range: 20°C
- Total precipitation: 940mm.
- Season of maximum precipitation: Summer
Population Profile
Lorenz Curve
Bilateral Graph
Nominal Area Choropleth Map
Unstandardized Choropleth Map
Standardized Choropleth Map
Univariate Choropleth Map
Bivariate Choropleth Map
Unclassed Choropleth Map
Unclassed choropleth maps do not use keys or legends to explain the data the shading of the data. This map was actually drawn to help visualize the proportion of children aged 0-15, using five classes based upon an equal bin interval classification scheme. Without the key it would be impossible to know which areas are more populated than others.
Classed Choropleth Map
A classed choropleth map helps understand a choropleth map much clearer than the unclassed choropleth map. This map uses a specific order to colors and applies a legend or key to label each color shown on the map. An example of this is how the red state stands out signifying the different data set up by the legend on the left hand side.
Range Graded Proportional Circle Map
This range graded proportional circle map uses the area of the circles to show their proportional to the channel width. The sizes of circle are what set this map apart from other circle maps. This specific map also uses color to indicate the color of the water, but that is not required for a range graded proportional circle map.
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