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Regression Calculations (REG)
Use the
key to enter the REG Mode when you want to perform
statistical calculations using regression.
(REG)
• In the SD Mode and REG Mode, the key operates as the key.
• Entering the REG Mode displays screens like the ones shown below.
• Press the number key ( , , or ) that corresponds to the type of
regression you want to use.
(Lin) : Linear regression
(Log) : Logarithmic regression
(Exp) : Exponential regression
(Pwr) : Power regression
(Inv) : Inverse regression
(Quad) : Quadratic regression
• Always start data input with (CLR) (Scl) to clear
statistical memory.
• Input data using the key sequence shown below.
<
x -data> < y -data>
• The values produced by a regression calculation depend on the values
input, and results can be recalled using the key operations shown in the
table below.
To recall this type of value: Perform this key operation:
Σ x
2
(S-SUM) (Σ x
2
)
Σ x (S-SUM) (Σ x )
n (S-SUM) (n )
Σ y
2
(S-SUM) (Σ y
2
)
Σ y (S-SUM) (Σ y )
46
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