Least Squares

Vvidget Builder User Manual

Laboratory > Least Squares

Least Squares computes and displays linear regression of 2D points. The main interface is shown below.

Interface field definitions are as follows:

m : The slope of the line.

b : The y-intercept of the line.

r : The linear regression correlation coefficient which is a measure of the line fit to the data points.

x : Once the linear regression is computed then enter an x-value and click the return key to view the y-value of the linear fit model associated with the entered x-value.

y : The y-value associated with the x-value entered.

x y pairs : The raw data of the points to fit. Enter x y pairs as space delimited values.

Dots : Once the data is entered, click Dots to view the fit with the data shown as dots.

Labels : Once the data is entered, click Labels to view the fit with the data shown as labels whose values are the data index.

Export : Click Export to place the graph in a Vvidget Builder document so it can be marked up for publication.

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m	:	The slope of the line.
b	:	The y-intercept of the line.
r	:	The linear regression correlation coefficient which is a measure of the line fit to the data points.
x	:	Once the linear regression is computed then enter an x-value and click the return key to view the y-value of the linear fit model associated with the entered x-value.
y	:	The y-value associated with the x-value entered.
x y pairs	:	The raw data of the points to fit. Enter x y pairs as space delimited values.
Dots	:	Once the data is entered, click Dots to view the fit with the data shown as dots.
Labels	:	Once the data is entered, click Labels to view the fit with the data shown as labels whose values are the data index.
Export	:	Click Export to place the graph in a Vvidget Builder document so it can be marked up for publication.