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A stem-and-leaf display or stem-and-leaf plot is a device for presenting quantitative data in a graphical format, similar to a histogram, to assist in visualizing the shape of a distribution. They evolved from Arthur Bowley 's work in the early 1900s, and are useful tools in exploratory data analysis. Stemplots became more commonly used in the ...
Statistical graphics have been central to the development of science and date to the earliest attempts to analyse data. Many familiar forms, including bivariate plots, statistical maps, bar charts, and coordinate paper were used in the 18th century. Statistical graphics developed through attention to four problems: [3]
A stem-and-leaf plot of prime numbers up to 100 shows that the most frequent tens digits are 0 and 1 while the least is 9. Source: ... and no Back-Cover Texts.
Somebody needs to check the math. I've always heard stemplots are to be rounded down to the nearest integer, yet in all the examples standard rounding principles (0-4, 5-9) are used.
Box plots are non-parametric: they display variation in samples of a statistical population without making any assumptions of the underlying statistical distribution, thus are useful for getting an initial understanding of a data set. For example, comparing the distribution of ages between a group of people (e.g., male and females). Flowchart ...
The fern code developed by Barnsley is an example of an iterated function system (IFS) to create a fractal. This follows from the collage theorem. He has used fractals to model a diverse range of phenomena in science and technology, but most specifically plant structures. IFSs provide models for certain plants, leaves, and ferns, by virtue of ...
A forest plot, also known as a blobbogram, is a graphical display of estimated results from a number of scientific studies addressing the same question, along with the overall results. [1] It was developed for use in medical research as a means of graphically representing a meta-analysis of the results of randomized controlled trials .
The Casparian strip is mainly located in the endodermis of the root, [26] but some plants also have the Casparian strip in the outer cortex on the outer side of the root cortex, stem or leaf. [27] For example, the conifers of Pinus bungeana and the stems of Pelargonium have the Casparian strip, which may be related to preventing water ...