HP 48gII - Manual (Page 587)

Page 18-16
ΣDAT: places contents of current ΣDATA matrix in level 1 of the stack.
„ΣDAT: stores matrix in level 1 of stack into ΣDATA matrix.
The ΣPAR sub-menu
The ΣPAR 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
ΣDATA representing x (Default: 1)
Ycol: indicates column of ΣDATA 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.
ΣPAR: shows statistical parameters.
RESET: reset parameters to default values
INFO: shows statistical parameters
The MODL sub-menu within ΣPAR
This sub-menu contains functions that let you change the data-fitting model to
LINFIT, LOGFIT, EXPFIT, PWRFIT or BESTFIT by pressing the appropriate button.
The 1VAR sub menu
The 1VAR sub menu contains functions that are used to calculate statistics of
columns in the
ΣDATA matrix.