Assembly Language Programming: Inferential Statistics and Distribution Functions
26
Test and Interval Output Variables
The inferential statistics and distribution variables are calculated as indicated
below. To access these variables for use in expressions, press
-
w
and
then select the menu listed in the
Variables and Catalog/Variables Menu
column
below.
All inferential statistics variables begin with the letters
st
to separate them from
other variables.
If you upload TI
-
86 variables that contain the sigma (
s
) or mu (
m
) symbols to your
computer, the Graph Link program will prompt you to rename them. This is
because computer file names cannot contain these symbols. When you download
the renamed variables to your TI
-
86, Graph Link restores the symbols and the files
are loaded in the calculator under their original names.
Important:
If you do not rename the sigma variables (st
s
.86n, st
s
1.86n, and
st
s
2.86n), they are stored on the computer under the names st_.86n, st_1.86n, and
st_2.86n. You cannot delete or rename these files on your computer, and you will
not be able to download them to your calculator.
TI
-
86 Variables
Variables and
Catalog / Variables Menu
Tests
Intervals
TLinR,
ANOVA
Math
Symbols
p-value
REAL
stp
stp
p
test statistics
REAL
stz, stt,
stchi, stF
stt, stF
z, t,
c
2
,
Ü
degrees of freedom
REAL
stdf
stdf
stdf
df
sample mean of x values for
sample 1 and sample 2
REAL
stmean1,
stmean2
stmean1,
stmean2
v
1
,
v
2
sample standard deviation of x
for sample 1 and sample 2
REAL
stSx1,
stSx2
stSx1,
stSx2
Sx
1
,
Sx
2
number of data points for
sample 1 and sample 2
REAL
stn
1
, stn
2
stn
1
, stn
2
n
1
, n
2
pooled standard deviation
REAL
stSxp
stSxp
stSxp
Sx
P
estimated sample proportion
REAL
stphat
stphat
ÇÇ
estimated sample proportion
for population 1
REAL
stphat1
stphat1
ÇÇ
1
estimated sample proportion
for population 2
REAL
stphat2
stphat2
ÇÇ
2
confidence interval pair
REAL
stLOWER,
stUPPER
lower,
upper
mean of x values
REAL
stxbar
stxbar
v
sample standard deviation of x
REAL
stSx
stSx
Sx
