Casio fx-7400G Manual page 22

Statistical Graphs and Calculations
k k k k k Paired-Variable Statistical Calculations
In the previous examples from "Linear Regression Graph" to "Power Regression
Graph," statistical calculation results were displayed after the scatter diagram was
drawn. These were numeric expressions of the characteristics of variables used in
the graphic display.
The following operation produces the same values directly from the statistical data
list.
Now you can press f and c to view variable characteristics.
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For details on the meanings of these statistical values, see "Displaying Paired-Vari-
able Statistical Results".
k k k k k Regression Calculation
In the explanations from "Linear Regression Graph" to "Power Regression Graph,"
regression calculation results were displayed after the graph was drawn. Here, the
regression line and regression curve is represented by mathematical expressions.
You can directly determine the same expression from the data input screen.
Perform the following key operation.
Single variable regression parameters are displayed.
Next, you can use the following.
1 (X) ............ Linear regression
2 (Med) ....... Med-Med regression
3 (X^2) ........ Quadratic regression
1 (Log) ........ Logarithmic regression
2 (Exp) ........ Exponential regression
3 (Pwr) ........ Power regression
The meanings of the parameters that appear on this screen are the same as those
for "Linear Regression Graph" to "Power Regression Graph".
2(CALC)2(2VAR)
2(CALC)3(REG)
1(X)
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