Slope of a Regression Model (Setup)
AP Statistics · Flashcards · Application
AP STATISTICS · FLASHCARDS
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QUESTION
Compute the test statistic if
b
=
2.4
b=2.4
b
=
2.4
,
S
E
b
=
0.6
SE_b=0.6
S
E
b
=
0.6
, and
H
0
:
β
=
0
H_0: \beta=0
H
0
:
β
=
0
.
QUESTION
Compute the test statistic when
b
=
2.4
b = 2.4
b
=
2.4
,
S
E
b
=
0.6
SE_b = 0.6
S
E
b
=
0.6
, and
H
0
:
β
=
0
H_0: \beta = 0
H
0
:
β
=
0
.
QUESTION
What are the degrees of freedom for a slope test when
n
=
18
n=18
n
=
18
data pairs are used?
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ANSWER
d
f
=
16
df = 16
df
=
16
. Calculate as
n
−
2
=
18
−
2
=
16
n-2 = 18-2 = 16
n
−
2
=
18
−
2
=
16
.
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