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# 4.18: Scatter Plots

Difficulty Level: At Grade Created by: CK-12
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Practice Scatter Plots

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### Vocabulary Language: English

$x-$axis

The $x-$axis is the horizontal axis in the coordinate plane, commonly representing the value of the input or independent variable.

$x-$coordinate

The $x-$coordinate is the first term in a coordinate pair, commonly representing the value of the input or independent variable.

$y-$axis

The $y-$axis is the vertical number line of the Cartesian plane.

$y-$coordinate

The $y-$coordinate is the second term in a coordinate pair, commonly representing the value of the output or dependent variable.

Coordinate Plane

The coordinate plane is a grid formed by a horizontal number line and a vertical number line that cross at the (0, 0) point, called the origin. The coordinate plane is also called a Cartesian Plane.

correlation

Correlation is a statistical method used to determine if there is a connection or a relationship between two sets of data.

line of best fit

A line of best fit is a straight line drawn on a scatter plot such that the sums of the distances to the points on either side of the line are approximately equal and such that there are an equal number of points above and below the line.

Origin

The origin is the point of intersection of the $x$ and $y$ axes on the Cartesian plane. The coordinates of the origin are (0, 0).

scatter plot

A scatter plot is a plot of the dependent variable versus the independent variable and is used to investigate whether or not there is a relationship or connection between 2 sets of data.

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