Test and interval output variables – Texas Instruments TI-84 User Manual
Page 373
Chapter 13: Inferential Statistics and Distributions
370
Test and Interval Output Variables
Test and Interval Output Variables
Test and Interval Output Variables
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.
df
df (degree of freedom) represents (number of sample categories)
- (number of estimated parameters for the selected distribution +
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
Input
Description