8
18
Regression Calculations
Press to enter REG mode:
Press , or for [Lin] = Linear regression,
[Log] = Logarithmic regression, [Exp] = Exponential
regression.
press or to enter another regression options:
You can press , or for [Pwr] = Power
regression,
[Inv] = Inverse regression, [Quad] = Quadratic regression.
(Example #19)
Logarithmic, Exponential, Power, and Inverse
Regression Formulas
• Logarithmic Regression : y = A + Blnx
• Exponential Regression : y = Ae
Bx
(lny = lnA + Bx)
• Power Regression : y = Ax
B
(lny = lnA + Blnx)
• Inverse Regression : y = A+Bx
-1
(Example #20)
BATTERY REPLACEMENT
When the display characters are dim even a darker LCD contrast
had been adjusted OR the following Low battery message
appears on the display, replace the battery immediately.
Please replace the lithium battery by the following procedures:
1. Press to power off the calculator.
2. Remove the screw which securely fix the battery cover in
place.
3. Slide the battery cover slightly and lift it.
4. Remove the old battery with a ball pen or similar sharp
object .
5. Load the new battery with the positive "+" side facing up.
6. Replace the battery cover, screw, and press the ,
to initialize the calculator.
Caution: Risk of explosion if battery is replaced by an incorrect
type. Dispose of used batteries according to the
instruction.
