Professor Smith wants to determine if a corr elation exist s betwee n absenc es and f inal g rade . She deter mines the number of absenc es for ten students in...

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Pearson
Professor Smith wants to determine if a
corr
elation exist
s betwee
n absenc
es and f
inal g
rade
. She
deter
mines the number of
absenc
es for
ten students in her c
lass and then de
termines the mea
n
final scor
e for
those students. Be
low are
her da
ta:
Student
Absenc
es
Score
1.
0
95
2.
1
90
3.
4
72
4.
3
78
5.
2
84
6.
5
67
7.
4
71
8.
2
80
9.
7
55
10.
5
64
1.
Sta
te
the
re
se
a
rc
h a
nd
nu
ll h
y
po
the
se
s:
2. The I
ndepende
nt Varia
ble is:___________________________
3. The De
pendent Va
riable is: ____________________________
4. Pearson’
s R = __________ Posit
ive or Ne
g
ative?
____________
5. The R is: St
rong
______
Modera
te _______
Weak ______
6. The Coef
ficient of D
eter
mination is:
__________
7.
Th
e
t st
a
tis
tic
is _
__
__
__
_
Sig
nif
ic
a
nt a
t th
e
__
__
__
_ le
ve
l.
8. What perce
nt of the cha
ng
e in the depe
ndent var
iable ca
n be attributed to the inde
pendent
varia
ble?
________%
9. I
f a student ha
d 6 absenc
es, wha
t would their final scor
e likely
be?
__________
10. State y
our conc
lusions. Do y
ou reje
ct the null hy
pothesis?
I
s attendanc
e important in order
to g
e
t a
g
oo
d g
ra
de
in P
ro
fe
sso
r S
mit
h’
s c
la
ss?
    • 11 years ago
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