Med-Med Graph; Quadratic Regression Graph - Casio FX-7400G PLUS User Manual

Statistical Graphs and Calculations
k k k k k Med-Med Graph
P.105
When it is suspected that there are a number of extreme values, a Med-Med graph
can be used in place of the least squares method. This is also a type of linear regres-
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.105 A quadratic regression graph represents connection of the data points of a scatter
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.
2(Med)
4(DRAW)
Med-Med graph slope
y

Med-Med graph

-intercept
3(X^2)
4(DRAW)
Chapter 7
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