Tuesday, November 27, 2012

Stem and Leaf plot


http://www.bbc.co.uk/schools/ks3bitesize/maths/handling_data/collecting_recording/revise8.shtml


Stem and Leaf plots help to organize and visualize a set of numbers to be easily used to calculate with. The stem of the plot represents the tens numbers of the data set and the leaf of the plot represents the ones of the data set. The one above is almost a short hand of writing the numbers down. For example, the 5 in the last row on the left can be put together with the zero on the right side of it making it 50, so there are two 50s.

Box plot


http://www.mathworks.com/help/stats/boxplot.html

Box plots display statistical data in a graph. The box represents the upper and lower quartiles, the line represents the median of all the data, and the horizontal lines at the end of the vertical lines represent the highest and lowest numbers of the data. The box plot above depicts the car milage in certain countries.

Histogram


http://searchsoftwarequality.techtarget.com/definition/histogram

A histogram is a graph that shows the data in rectangles that represent the frequency of the data in a numerical succession. There are no spaces between the bars on the graph. In the one above, the scores of a final exam are represented.  Most students scored between a 60- 80.

Parallel coordinate graph


http://vis.lbl.gov/Vignettes/Drosophila/index.html

Parallel coordinate graphs show the relationship between variables. The data is potted vertically on a graph and then connected with lines. When the lines cross each other, that means that the correlation is negative. In the graph above, the cells of nine different genes are represented.

Triangular plot


http://www.dplot.com/triangle_plot.htm

A triangular plot is a plot that puts the data in a triangular form. In the map above, describes the different classification of soil composition. It is based on the percentage of sand, silt, and clay found in every sample.

Windrose


http://www.vistadatavision.com/wind-rose/

A windrose is a plot that shows different wind patterns from a certain region in a circular motion. This plot would probably be useful to meteorologists. In the windrose above over the course of thirty years most of the wind came from the east and very little came from the west.

Climograph


http://www4.uwsp.edu/geo/faculty/lemke/geog101/lectures/09_global_climate_patterns.html

A climograph depicts the relationship between precipitation and temperature during a certain amount of time in a geographical area. The graph above shows the temperature as the purple line and the average precipitation as the blue bars during one year in Walgett, Australia.