Statistics and Data Plots
546
Calc Type
Description
OneVar
One-variable statistics — Calculates the statistical variables.
TwoVar
Two-variable statistics — Calculates the statistical variables.
CubicReg
Cubic regression — Fits the data to the third-order
polynomial
y=ax
3
+bx
2
+cx+d
. You must have at least four
data points.
•
For four points, the equation is a polynomial fit.
•
For five or more points, it is a polynomial regression.
ExpReg
Exponential regression — Fits the data to the model
equation
y=ab
x
(where a is the y-intercept) using a least-
squares fit and transformed values
x
and
ln(y)
.
LinReg
Linear regression — Fits the data to the model
y=ax+b
(where a is the slope, and b is the y-intercept) using a least-
squares fit and x and y.
LnReg
Logarithmic regression — Fits the data to the model
equation
y=a+b ln(x)
using a least-squares fit and
transformed values
ln(x)
and
y
.
Logistic
Logistic regression — Fits the data to the model
y=a/(1+b
ù
e^(c
ù
x))+d
and updates all the system statistics
variables.
MedMed
Median-Median — Fits the data to the model
y=ax+b
(where
a is the slope, and b is the y-intercept) using the median-
median line, which is part of the resistant line technique.
Summary points
medx1
,
medy1
,
medx2
,
medy2
,
medx3
,
and
medy3
are calculated and stored to variables, but they
are not displayed on the STAT VARS screen.
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 ...
