Inferential Statistics and Distributions 13-7
8313INFE.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:47 PM Printed: 02/19/01 1:38 PM
Page 7 of 36
Most inferential stat editors prompt you to select one of
two types of input. (
1
.
PropZInt
and
2
.
PropZTest
,
1
.
PropZInt
and
2
.
PropZInt
,
c
2
.
Test
, and
LinRegTTest
do not.)
•
Select
Data
to enter the data lists as input.
•
Select
Stats
to enter summary statistics, such as
þ
,
Sx
,
and
n
, as input.
To select
Data
or
Stats
, move the cursor to either
Data
or
Stats
, and then press
Í
.
Inferential stat editors require a value for every argument.
If you do not know what a particular argument symbol
represents, see the tables on pages 13
.
26 and 13
.
27.
When you enter values in any inferential stat editor, the
TI
.
83 stores them in memory so that you can run many
tests or intervals without having to reenter every value.
Most of the inferential stat editors for the hypothesis tests
prompt you to select one of three alternative hypotheses.
•
The first is a
ƒ
alternative hypothesis, such as
mƒm
0
for
the
Z
.
Test
.
•
The second is a
<
alternative hypothesis, such as
m
1<
m
2
for the
2
.
SampTTest
.
•
The third is a
>
alternative hypothesis, such as
p1>p2
for
the
2
.
PropZTest
.
To select an alternative hypothesis, move the cursor to the
appropriate alternative, and then press
Í
.
Selecting Data or
Stats
Entering the
Values for
Arguments
Selecting an
Alternative
Hypothesis
(
ƒ
< >)
Enter values for
arguments
Select an alternative
hypothesis
Select
Calculate
or
Draw
output
Select
Data
or
Stats
input
