Chapter 13: Inferential Statistics and Distributions
240
Test and Interval Output Variables
The inferential statistics variables are calculated as indicated below. To access these variables for
use in expressions, press
5
(
5:Statistics
), and then select the
VARS
menu listed in the last
column below.
n1
The count of observations in sample one for the
2-PropZTest
and
2-PropZInt
. Must be an integer > 0.
n2
The count of observations in sample two for the
2-PropZTest
and
2-PropZInt
. Must be an integer > 0.
C-Level
The confidence level for the interval instructions. Must be
‚
0 and
< 100. If it is
‚
1, it is assumed to be given as a percent and is
divided by 100. Default=0.95.
Observed (Matrix)
The matrix name that represents the columns and rows for the
observed values of a two-way table of counts for the
c
2
-Test
and
c
2
GOF-Test
.
Observed
must contain all integers
|
0. Matrix
dimensions must be at least 2×2.
Expected (Matrix)
The matrix name that specifies where the expected values should
be stored.
Expected
is created upon successful completion of
the
c
2
-Test
and
c
2
GOF-Test
.
df
df (degree of freedom) represents (number of sample categories)
- (number of estimated parameters for the selected distri
1).
Xlist
,
Ylist
The names of the lists containing the data for
LinRegTTest
and
LinRegTInt
. Defaults are
L1
and
L2
, respectively. The
dimensions of
Xlist
and
Ylist
must be the same.
RegEQ
The prompt for the name of the Y= variable where the calculated
regression equation is to be stored. If a Y= variable is specified,
that equation is automatically selected (turned on). The default is
to store the regression equation to the
RegEQ
variable only.
Variables
Tests
Intervals
LinRegTTest,
ANOVA
VARS
Menu
p-value
p
p
TEST
test statistics
z, t,
c
2
,
Ü
t,
Ü
TEST
degrees of freedom
df
df
df
TEST
sample mean of x values for
sample 1 and sample 2
v
1,
v
2
v
1,
v
2
TEST
sample standard deviation of x for
sample 1 and sample 2
Sx1,
Sx2
Sx1,
Sx2
TEST
number of data points for sample 1
and sample 2
n1, n2
n1, n2
TEST
pooled standard deviation
SxP
SxP
SxP
TEST
Input
Description
