Regression Graph Operations (Curve Fitting) - Casio fx-CP400 User Manual

[Graph] - [Box Whisker]
This type of graph lets you see how a large number of data items are grouped
within specific ranges. The lines from Min to Q
"whiskers". If [Calc] - [Show Outliers] box is checked on the Spreadsheet Graph
window, "outlier" circular symbols are shown instead of "whisker" lines where a
data value is relatively large or small compared to the other data values.
• When you select a box whisker graph, each column will be displayed as a
separate box whisker.
• Tapping the Q , Q , Med, Min, or Max location of a box whisker graph will
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cause the applicable value to appear at the bottom of the screen.

Regression Graph Operations (Curve Fitting)

After plotting a scatter graph using paired-variable ( , ) data on the spreadsheet, you can draw a regression
graph that approximates the scatter graph and determine the regression formula.
u To plot a scatter graph and then draw its regression graph
1. Enter the paired-variable data into the spreadsheet, and then select the range of cells where it is located.
• For information about how data is treated based on the range of cells that are selected, see "[Graph] -
[Scatter]" (page 233) under "Graph Menu and Graph Examples".
2. Tap [Graph] and then [Scatter].
• This will open the Graph window in the lower half of the display and plot the scatter graph.
3. When plotting a scatter graph with multiple -values, select one of the -value plots that you want to use for
drawing the regression graph by tapping it.
4. On the Graph window, perform the following steps.
To draw this:
Linear regression curve
Med-Med graph
Quadratic regression curve
Cubic regression curve
Quartic regression curve
Quintic regression curve
Logarithmic regression curve
Exponential regression curve
Exponential regression curve
Power regression curve
Sinusoidal regression curve
Logistic regression curve
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, and from Q
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to Max are called
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Select this [Calc] menu item:
Linear Reg
MedMed Line
Quadratic Reg
Cubic Reg
Quartic Reg
Quintic Reg
Logarithmic Reg
Exponential Reg
abExponential Reg
Power Reg
Sinusoidal Reg
Logistic Reg
Chapter 13: Spreadsheet Application
Min Q Med Q Max
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Or tap this:
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