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LnReg
MATH/Statistics/Regressions menu
list1
list2
LnReg
,
Calculates the logarithmic regression and updates
all the system statistics variables.
All the lists must have equal dimensions except
for
list5
represents xlist.
list1
represents ylist.
list2
represents frequency.
list3
represents category codes.
list4
represents category include list.
list5
Note:
or c1–c99 (columns in the last data variable
shown in the Data/Matrix Editor).
have to be a variable name and cannot be c1–
c99.
Local
CATALOG
var1
var2
Local
[,
Declares the specified
Those variables exist only during evaluation of a
program or function and are deleted when the
program or function finishes execution.
Note: Local variables save memory because they
only exist temporarily. Also, they do not disturb
any existing global variable values. Local
variables must be used for
temporarily saving values in a multi-line function
since modifications on global variables are not
allowed in a function.
Lock
CATALOG
var1
var2
Lock
[,
Locks the specified variables. This prevents you
from accidentally deleting or changing the
variable without first using the unlock instruction
on that variable.
In the example to the right, the variable L1 is
locked and cannot be deleted or modified.
Note: The variables can be unlocked using the
Unlock
Appendix A: Functions and Instructions
[
]
list3
list4
list5
, [
] [,
,
]
.
through
must be a variable name
list1
list4
var3
...
] [,
]
vars
as local variables.
For
]
...
command.
In function graphing mode:
{1,2,3,4,5,6,7,8} ! L1 ¸
{1,2,2,3,3,3,4,4} ! L2 ¸
LnReg L1,L2 ¸
ShowStat ¸
does not
list5
¸
Regeq(x) " y1(x) ¸
NewPlot 1,1,L1,L2 ¸
¥ %
Program listing:
:prgmname()
:Prgm
:Local x,y
:Input "Enter x",x
:Input "Enter y",y
:Disp x ù y
:EndPrgm
loops and for
Note:
executes.
{1,2,3,4} ! L1 ¸
Lock L1 ¸
DelVar L1 ¸
x
y
and
do not exist after the program
Error: Variable is locked or protected
{1 2 3
}
...
{1 2 2
}
...
Done
Done
Done
{1,2,3,4}
Done
837
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