n(Σxy) - (Σχ)(Σy) VnEx - (Σ] [ nEy? - (Ey}]
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
Related questions
Question
![A. Describe the strength and direction of correlation of the following pairs of variables.
Complete the table bellows and compute the value of correlation coefficient (r). Using
the formula ---
r=
n(Exy)-(Ex)(Ey)
√InEx²-(Ex)²] [nEy²-(Ey)²]
2. It is hypothesized that the number of hours that a student studies (X) is related to the
examination grade (Y) obtained. The following are data obtained from ten students.
Determine if there is a relationship between the two variables.
Baby
X
Y
A
8
56
B
5
44
C
11
79
T
D
13
72
E
10
70
F
5
54
G
18
94
H
15
85
J
2
8
33
65](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcb00a801-a45a-4ab6-a409-ae44f120c32a%2F43996b54-4b47-4b8f-ab8d-1707ee395bc2%2Fh5ohmob_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A. Describe the strength and direction of correlation of the following pairs of variables.
Complete the table bellows and compute the value of correlation coefficient (r). Using
the formula ---
r=
n(Exy)-(Ex)(Ey)
√InEx²-(Ex)²] [nEy²-(Ey)²]
2. It is hypothesized that the number of hours that a student studies (X) is related to the
examination grade (Y) obtained. The following are data obtained from ten students.
Determine if there is a relationship between the two variables.
Baby
X
Y
A
8
56
B
5
44
C
11
79
T
D
13
72
E
10
70
F
5
54
G
18
94
H
15
85
J
2
8
33
65
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