Texas Instruments TI-83 PLUS - Manual (Page 425)

TI-83 Plus Inferential Statistics and Distributions 422
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.
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
estimated sample proportion З З TEST
estimated sample proportion for
population 1 З 1 З 1 TEST
estimated sample proportion for
population 2 З 2 З 2 TEST