Appendix B: Technical Reference
937
LnReg
Uses the least-squares algorithm and transformed
values ln(
x
) and
y
to fit the model equation:
y
=
a
+
b
ln(
x
)
Logistic
Uses the least-squares algorithm to fit the model
equation:
y=a/(1+b*
e
^(c*x))+d
MedMed
Uses the median-median line (resistant line)
technique to calculate summary points x1, y1, x2,
y2, x3, and y3, and fits the model equation:
y
=
ax
+
b
where
a
is the slope and
b
is the y-intercept.
PowerReg
Uses the least-squares algorithm and transformed
values ln(
x
) and ln(
y
) to fit the model equation:
y=ax
b
QuadReg
Uses the least-squares algorithm to fit the second-
order polynomial:
y
=
ax
2
+
bx
+
c
For three data points, the equation is a polynomial
fit; for four or more, it is a polynomial regression.
At least three data points are required.
QuartReg
Uses the least-squares algorithm to fit the fourth-
order polynomial:
y
=
ax
4
+
bx
3
+
cx
2
+
dx
+
e
For five data points, the equation is a polynomial
fit; for six or more, it is a polynomial regression. At
least five data points are required.
SinReg
Uses the least-squares algorithm to fit the model
equation:
y=a sin(bx+c)+d
Summary of Contents for Voyage 200
Page 36: ...Getting Started 36 D B D B Press Result ...
Page 45: ...Getting Started 45 3 0 D B D D B D Press Result ...
Page 46: ...Getting Started 46 D 2 0 0 2 D B Scroll down to October and press Press Result ...
Page 60: ...Getting Started 60 B D Press Result ...
Page 139: ...Previews 139 8 Complete the operation Press 2 d Steps and keystrokes Display 5 f 2 ...
Page 453: ...Differential Equation Graphing 453 ...
Page 468: ...Tables 468 ...
Page 777: ...Activities 777 ...
