HP 50G, User Manual

Page: 583 / 887

Page 18-16
The DATA sub-menu
The DATA sub-menu contains functions used to manipulate the statistics matrix
Σ
DATA:
The operation of these functions is as follows:
Σ
+ : add row in level 1 to bottom of
Σ
DATA matrix.
Σ
- : removes last row in
Σ
DATA matrix and places it in level of 1 of the stack.
The modified
Σ
DATA matrix remains in memory.
CL
Σ
: erases current
Σ
DATA matrix.
Σ
DAT: places contents of current
Σ
DATA matrix in level 1 of the stack.
„ Σ
DAT: stores matrix in level 1 of stack into
Σ
DATA matrix.
The
Σ
PAR sub-menu
The
Σ
PAR sub-menu contains functions used to modify statistical parameters.
The parameters shown correspond to the last example of data fitting.
The parameters shown in the display are:
Xcol: indicates column of
Σ
DATA representing x (Default: 1)
Ycol: indicates column of
Σ
DATA representing y (Default: 2)
Intercept: shows intercept of most recent data fitting (Default: 0)
Slope: shows slope of most recent data fitting (Default: 0)
Model: shows current data fit model (Default: LINFIT)
The functions listed in the soft menu keys operate as follows:
XCOL: entered as n
@XCOL
, changes Xcol to n.
YCOL: entered as n
@YCOL
, changes Ycol to n.