Appendix A: Functions and Instructions 811
LinReg MATH/Statistics/Regressions menu
LinReg
list1
,
list2
[, [
list3
] [,
list4
,
list5
]]
Calculates the linear regression and updates all the
system statistics variables.
All the lists must have equal dimensions except for
list5
.
list1
represents xlist.
list2
represents ylist.
list3
represents frequency.
list4
represents category codes.
list5
represents category include list.
In function graphing mode:
{0,1,2,3,4,5,6}! L1
¸
{0 1 2
...
}
{0,2,3,4,3,4,6}! L2
¸
{0 2 3
...
}
LinReg L1,L2
¸ Done
ShowStat
¸
Note:
list1
through
list4
must be a variable name or
c1–c99 (columns in the last data variable shown in
the Data/Matrix Editor).
list5
does not have to be a
variable name and cannot be c1–c99.
¸
Regeq(x)"y1(x)
¸ Done
NewPlot 1,1,L1,L2
¸ Done
¥%
@list() MATH/List menu
list
(
list1
)
⇒
list
Returns a list containing the differences between
consecutive elements in
list1
. Each element of
list1
is
subtracted from the next element of
list1
. The
resulting list is always one element shorter than the
original
list1
.
@list({20,30,45,70}) ¸
{10,15,25}
list4mat() MATH/List menu
list4mat(
list
[,
elementsPerRow
]) ⇒
matrix
Returns a matrix filled row-by-row with the elements
from
list
.
elementsPerRow
, if included, specifies the number of
elements per row. Default is the number of elements
in
list
(one row).
If
list
does not fill the resulting matrix, zeros are
added.
list4mat({1,2,3})
¸ [1 2 3]
list4mat({1,2,3,4,5},2)
¸
1 2
3 4
5 0
ln() @ 2x key H x key
ln(
expression1
) ⇒
expression
ln(
list1
) ⇒
list
Returns the natural logarithm of the argument.
For a list, returns the natural logarithms of the
elements.
ln(2.0)
¸ .693
...
If complex format mode is
REAL
:
ln({ë 3,1.2,5})
¸
Error: Non-real result
If complex format mode is
RECTANGULAR
:
ln({ë 3,1.2,5})
¸
{ln(3) + pø
i
.182
...
ln(5)}
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