Operation Manual

TI-83 Plus Inferential Statistics and Distributions 415
Calculated results:
,,
Drawn results:
LinRegTTest
LinRegTTest
(linear regression
t
test; item
E
) computes a linear
regression on the given data and a
t
test on the value of slope
b
and the
correlation coefficient
r
for the equation
y
=
a
+
b
x. It tests the null
hypothesis H
0
:
b
=0 (equivalently,
r
=0) against one of the alternatives
below.
•
H
a
:
bƒ
0 and
rƒ
0 (
b
&
r
:
ƒ
0
)
•
H
a
:
b
<0 and
r
<0 (
b
&
r
:<0
)
•
H
a
:
b
>0 and
r
>0 (
b
&
r
:>0
)