188
Alphabetical Listing
tTest
Catalog >
tTest
μ
0
,
List
[
,
Freq
[
,
Hypoth
]]
(Data list input)
tTest
μ
0
,
v
,
sx
,
n
,
[
Hypoth
]
(Summary stats input)
Performs a hypothesis test for a single
unknown population mean
μ
when the
population standard deviation
σ
is unknown.
A summary of results is stored in the
stat.results
variable. (See page 172.)
Test H
0
:
μ
=
μ
0, against one of the
following:
For H
a
:
μ
<
μ
0, set
Hypoth
<0
For H
a
:
μ ≠ μ
0 (default), set
Hypoth
=0
For H
a
:
μ
>
μ
0, set
Hypoth
>0
For information on the effect of empty
elements in a list, see “Empty (Void)
Elements,” page 232.
Output variable
Description
stat.t
(
v
− μ
0) / (stdev / sqrt(n))
stat.PVal
Smallest level of significance at which the null hypothesis can be rejected
stat.df
Degrees of freedom
stat.
v
Sample mean of the data sequence in
List
stat.sx
Sample standard deviation of the data sequence
stat.n
Size of the sample
tTest_2Samp
Catalog >
tTest_2Samp
List1
,
List2
[
,
Freq1
[
,
Freq2
[
,
Hypoth
[
,
Pooled
]]]]
(Data list input)
tTest_2Samp
v
1
,
sx1
,
n1
,
v
2
,
sx2
,
n2
[
,
Hypoth
[
,
Pooled
]]
(Summary stats input)
Содержание TI-Nspire CAS
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