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a plot in rectangular coordinates of paired observations of two random variables, each observation plotted as one point on the graph; the scatter or clustering of points provides an indication of the strength of the relationship between the two variables.


Graphic display of distribution of two variables in relation to each other.
[scatter + G. gramma, something written]


Etymology: ME, scateren + Gk, gramma, record
a graph representing the distribution of two variables in a sample population. One variable is plotted on the vertical axis, the second on the horizontal axis. The scores or values of each sample unit are usually represented by dots. A scattergram demonstrates the degree or tendency with which the variables occur in association with each other.


a graph in which the values found in a statistical study are represented by disconnected, individual symbols.
References in periodicals archive ?
In all six problem stations, the resulting scattergrams (Figures 5a-5f) illustrated that all the geometric mean values of fecal coliform concentrations and their upper limits appear below the NSSP limit of 14 MPN/100 mL during the study period.
Examination of scattergrams showed that there were many "zero" Kromecote card densities with high concentrations of airborne Btk outside the spray zone, indicating that the large aerosols captured by the Kromecote cards were less likely to drift outside the spray zone (only 9 of 27 sites outside the spray zone had Kromecote card densities [is greater than] 0), yet the smaller aerosols captured by the air samples did drift (24 of 27 air samples had detectable Btk concentrations).
Using these ages in place of chronological ages, and plotting them against raw scores for each child in each of the subscales, scattergrams were obtained which showed developmental progressions.
After the scattergrams of mortality rate versus distance were created and evaluated, the census block groups were divided into different buffer zones of equal distance to the nearest MSL and TRI site, respectively.
The bivariate date are succinctly portrayed in scattergrams in which a point on the graph represents a pair of observations (i.
It contains charting tools such as Pareto diagrams, scattergrams, and histograms.
Other features include beat averaging, beat classification and outlier removal based on abnormal R-R intervals, heart rate, noise and activity, Poincare plots and scattergrams and the ability to easily extract source data and average data as images or text files.
The expert could therefore rely on the responsibility of the laboratory for all analytical aspects; however, it is wise to double check certain aspects, such as transport times, results ofdouble analysis, and red cell scattergrams, because these might provide valuable additional information useful in the evaluation of the profile.
These flags are generated by patterns in the scattergrams that are typical for certain abnormalities.
Some regulators have incorporated images produced by the instruments, such as histograms and scattergrams, in their definition of results and require those images as part of the results to be maintained.
With access to data from the Nelson Investment Manager Database, users are able to analyze current and historical performance rankings, upper/lower quartiles, risk/reward scattergrams and more.