Texas Instruments TI-89 Titanium - Page 214

208 Appendix A: Functions and Instructions
MedMed MATH/Statistics/Regressions menu
MedMed list1 , list2 [, [ list3 ] [, list4 , list5 ]]
Calculates the median-median line 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.
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.
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 ...}
MedMed L1,L2
¸ Done
ShowStat
¸
¸
Regeq(x)! y1(x)
¸ Done
NewPlot 1,1,L1,L2
¸ Done
¥%
mid() MATH/String menu
mid( sourceString , start [, count ]) ⇒ string
Returns count characters from character string
sourceString , beginning with character number
start .
If
count is omitted or is greater than the
dimension of
sourceString , returns all characters
from
sourceString , beginning with character
number
start .
count must be ‚ 0. If count = 0, returns an empty
string.
mid("Hello there",2) ¸
"ello there"
mid("Hello there",7,3)
¸
"the"
mid("Hello there",1,5)
¸
"Hello"
mid("Hello there",1,0)
¸
""
mid( sourceList , start [, count ]) ⇒ list
Returns count elements from sourceList , beginning
with element number
start .
If
count is omitted or is greater than the
dimension of
sourceList , returns all elements from
sourceList , beginning with element number start .
count must be ‚ 0. If count = 0, returns an empty
list.
mid({9,8,7,6},3) ¸ {7 6}
mid({9,8,7,6},2,2)
¸ {8 7}
mid({9,8,7,6},1,2)
¸ {9 8}
mid({9,8,7,6},1,0)
¸ {}
mid( sourceStringList , start [, count ]) ⇒ list
Returns count strings from the list of strings
sourceStringList , beginning with element number
start .
mid({"A","B","C","D"},2,2)
¸
{"B" "C"}