TI-83 Plus
Tables and Reference Information
726
2
.
SampTTest
The following is the definition for the 2
.
SampTTest. The two-sample
t
statistic with degrees of freedom
df
is:
S
x
x
t
2
1
−
=
where the computation of
S
and
df
are dependent on whether the
variances are pooled. If the variances are not pooled:
2
2
2
1
2
1
n
Sx
n
Sx
S
+
=
2
2
2
2
2
2
1
2
1
1
2
2
2
2
1
2
1
1
1
1
1
−
+
−
+
=
n
Sx
n
n
Sx
n
n
Sx
n
Sx
df
Summary of Contents for 83PL/CLM/1L1/V - 83 Plus Calc
Page 407: ...TI 83 Plus Inferential Statistics and Distributions 404 Input Calculated results Drawn results...
Page 412: ...TI 83 Plus Inferential Statistics and Distributions 409 Data Stats Input Calculated results...
Page 454: ...TI 83 Plus Applications 451 tvm_FV tvm_FV computes the future value tvm_FV PV PMT P Y C Y...
