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A-30 Tables and Reference Information
8399APXA.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 1:25 PM Printed: 02/19/01 1:40 PM
Page 30 of 58
Function or Instruction/
Arguments Result
Key or Keys/
Menu or Screen/Item
Time
Sets sequence graphs to plot
with respect to time.
†
y
[
FORMAT
]
Time
6
-
8
TInterval
[
listname
,
freqlist
,
confidence level
]
(Data list input)
Computes a
t
confidence
interval.
†
…
TESTS
8:TInterval
13
-
17
TInterval
v
,
Sx
,
n
[
,
confidence level
]
(Summary stats input)
Computes a
t
confidence
interval.
†
…
TESTS
8:TInterval
13
-
17
tpdf(
x
,
df
)
Computes the probability
density function (pdf) for the
Student-
t
distribution at a
specified
x
value with specified
degrees of freedom
df
.
y
[
DISTR
]
DISTR
4:tpdf(
13
-
30
Trace
Displays the graph and enters
TRACE
mode.
r
3
-
18
T-Test
m
0
[
,
listname
,
freqlist
,
alternative
,
drawflag
]
(Data list input)
Performs a
t
test with
frequency
freqlist
.
alternative
=
L
1
is
<
;
alternative
=
0
is
ƒ
;
alternative
=
1
is
>
.
drawflag
=
1
draws results;
drawflag
=
0
calculates results.
†
…
TESTS
2:T-Test
13
-
11
T-Test
m
0
,
v
,
Sx
,
n
[
,
alternative
,
drawflag
]
(Summary stats input)
Performs a
t
test with
frequency
freqlist
.
alternative
=
L
1
is < ;
alternative
=
0
is
ƒ
;
alternative
=
1
is >.
drawflag
=
1
draws results;
drawflag
=
0
calculates results.
†
…
TESTS
2:T-Test
13
-
11