Thursday, June 24, 2010

Scatterplots


Scatterplots:
The general meaning of a scatter is to unevenly distribute,something that is not in an order.But here in mathematics the meaning of a scatterplot is a type of mathematical diagram using Cartesian coordinates to display values for two variables for a set of data.

It is very important to learn about the uses of a scatterplot,in Statistics a scatterplot is a graphic tool used to show the relationship between two quantitative variables. The variable that might be measured an expounding variable is plotted on the x-axis, and the response variable is plotted on the y-axis.It provides a graphical expose of the link between the two variables. It is also useful in the early stages of study when exploring records ahead of really devious a parallel coefficient or corrects a regression curve. For example, a scatter plot can aid one to decide whether a linear waning model is proper.
Statistical Scatterplots can explain a variety of patterns and associations in Statistics, such as:
  • Data association
  • Optimistic or direct relations between variables
  • Pessimistic or opposite associations between variables
  • Scattered record points
  • Non-linear pattern
  • Increase of data
  • Outliers.

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