7-7-5

Performing Statistical Calculations

Viewing Regression Calculation Results

To view regression calculation results, tap [Calc] on the menu bar and then tap the type of calculation results you want.

To view these calculation results:Tap this option:

 

 

Linear regression

Linear Reg

Med-Med

MedMed Line

Quadratic regression

Quadratic Reg

Cubic regression

Cubic Reg

Quartic regression

Quartic Reg

Logarithmic regression

Logarithmic Reg

Exponential regression (y = a·eb·x)

Exponential Reg

Exponential regression (y = a·bx)

abExponential Reg

Power regression

Power Reg

Sinusoidal regression

Sinusoidal Reg

Logistic regression

Logistic Reg

 

 

•You can also use the [DispStat] option to display the last calculated statistical results. For details about regression calculation results, see “7-5 Graphing Paired-Variable Statistical Data”.

Residual Calculation

Residual calculation calculates the distance (residual) between the regression model and an actual plotted point (y-coordinates) during regression calculations.

uClassPad Operation

(1)mI

(2)Input the data you want into a list.

(3)Tap [Calc] and then [Linear Reg].

(4)On the dialog box that appears, tap the [Copy Residual] down arrow button, and then select [On] or the list into which you want to copy the residual values.

•Values assigned to the “residual” system variable shows the vertical distances between actually plotted points and the regression model.

•A positive value indicates a plot that is higher than the regression model, while a negative value indicates a plot that is lower.

•Whenever the [Copy Residual] setting is configured as described above, the ClassPad automatically assigns residual data to a system variable named “residual” when you perform a regression calculation. You can use the following procedure to view the current “residual” system variable values.

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