Casio FX-7400G User Manual page 109

Statistical Graphs and Calculations
The following are the meanings of the above parameters.
a ......
b ......
r ......
k k k k k Med-Med Graph
When it is suspected that there are a number of extreme values, a Med-Med graph
P.99
can be used in place of the least squares method. This is also a type of linear regres-
(G-Type)
sion, but it minimizes the effects of extreme values. It is especially useful in produc-
ing highly reliable linear regression from data that includes irregular fluctuations,
such as seasonal surveys.
The following are the meanings of the above parameters.
a ......
b ......
k k k k k Quadratic Regression Graph
P.99 A quadratic regression graph represents connection of the data points of a scatter
(G-Type) diagram. It actually is a scattering of so many points that are close enough together
to be connected. The formula that represents this is quadratic regression.
Regression coefficient (slope)
Regression constant term (intercept)
Correlation coefficient
2(Med)
4(DRAW)
Med-Med graph slope
Med-Med graph intercept
3(X^2)
Chapter 7
1 2 3 4
1 2 3 4
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