Two Variable Graphing Definitions.

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Independent Variable

a value that doesn't depend on any others (it's just measured)

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Ordered Pair

first number plotted on x axis, second # plotted on y axis

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Scatter Plot

any graph of a set of points

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Dependent Variable

a value that depends or changes based on another (the one you want to predict)

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Interpolation

estimate a point on the line between given data points

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Linear Relationship

a pattern in data points on a graph that can be drawn as a straight line

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Origin

the point where the axes intersect

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Break mark

shows there is a break in the measurements on either axis

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X Axis

horizontal line at bottom of the graph labelled with name and measurements of the independent variable

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Negative Correlation

as independent variables increase, the dependent variables decreases graph goes down and to the right

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No Correlation

No pattern appears in the data-no line of best fit can be drawn because there is no relationship between the variables

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Non-linear Relationship

a pattern in data points on a graph that can be drrawn as a curved line

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Title

words at the top of a graph that identify the two variables and/or their relationship

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Extrapolation

estimate a point on the line after extending it beyond the given points

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Trend

a pattern in the data between the two variables (increasing or decreasing)

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Outlyer(outlier)

a piece of data that's bery different fromt the others

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Line of Best Fit

smooth line drawn near or through points on a graph that shows a trend

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First Difference

the difference between consecutive y values

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Positive Correlation

as independent variable increases, the dependent variables also increases-graph goes up and to the right

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Y Axis

vertical line at side of graph labelled with name and mearurements of the dependent variable