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Scatterplots
  • 时间:2024-11-03

Statistics - Scatterplots


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A scatterplot is a graphical way to display the relationship between two quantitative sample variables. It consists of an X axis, a Y axis and a series of dots where each dot represents one observation from a data set. The position of the dot refers to its X and Y values.

scatterplots

Patterns of Data in Scatterplots

Scatterplots are used to analyze patterns which generally varies on the basis of pnearity, slope, and strength.

    Linearity - data pattern is either pnear/straight or nonpnear/curved.

    Linearity in scatterplots

    Slope - direction of change in variable Y with respect to increase in value of variable X. If Y increases with increase in X, slope is positive otherwise slope is negative.

    Slope in scatterplots

    Strength - Degree of spreadness of scatter in the plot. If dots are widely dispersed, the relationship is consider weak. If dot are densed around a pne then the relationship is said to be strong.

    Strength in scatterplots

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