Linregttest – Texas Instruments TI-84 User Manual
Page 366
Chapter 13: Inferential Statistics and Distributions
363
LinRegTTest
LinRegTTest
LinRegTTest
LinRegTTest
LinRegTTest
(linear regression
t
test; item
F)
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+bx. It tests the null hypothesis H
0
:
b=0 (equivalently, r=0) against one of the
alternatives below.
•
H
a
:
bƒ0 and rƒ0 (b
&
r
:
ă
0
)
•
H
a
:
b<0 and r<0 (b
&
r
:<0
)
•
H
a
:
b>0 and r>0 (b
&
r
:>0
)
The regression equation is automatically stored to
RegEQ
(
VARS Statistics EQ
secondary
menu). If you enter a Y= variable name at the
RegEQ:
prompt, the calculated regression
equation is automatically stored to the specified Y= equation. In the example below, the
regression equation is stored to
Y1
, which is then selected (turned on).
In the example:
Drawn results:
L3={
L4={
38
41
56
63
59
70
64
72
74}
84}
Data
Stats