HP 39g+ Graphing Calculator User's Guide Page 107

  • Download
  • Add to my manuals
  • Print
  • Page
    / 294
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 106
Statistics aplet 8-13
To define your
own fit
1. In Numeric view, make sure is set.
2. Display the Symbolic view.
3. Highlight the Fit expression (Fit1, etc.) for the
desired data set.
4. Type in an expression and press .
The independent variable must be X, and the
expression must not contain any unknown variables.
Example: .
This automatically changes the Fit type (S1FIT, etc.) in
the Symbolic Setup view to User Defined.
Computed statistics
One-variable
Quadratic Fits to a quadratic curve,
y = ax
2
+bx+c. Needs at least three
points.
Cubic Fits to a cubic curve,
y = ax
3
+bx
2
+cx+d. Needs at least
four points.
Logistic Fits to a logistic curve,
,
where L is the saturation value for
growth. You can store a positive
real value in L, or—if L=0—let L be
computed automatically.
User
Defined
Define your own expression (in
Symbolic view.)
Fit model Meaning (Continued)
y
L
1 ae
bx()
+
--------------------------
=
1.5 xcos× 0.3 xsin×+
Statistic Definition
NΣ Number of data points.
TOTΣ Sum of data values (with their
frequencies).
Page view 106
1 2 ... 102 103 104 105 106 107 108 109 110 111 112 ... 293 294

Comments to this Manuals

No comments