Question
In: Statistics and Probability
Please show steps An Educational Psychologist would like to know the relationship between the number of...
Please show steps
An Educational Psychologist would like to know the relationship
between the
number of hours per week that students study for a course and their
performance in
the test.
a) Compute the Pearson correlation of the data below
b) Determine the significance of the correlation at α .05,
two-tailed by referring
to Table B.6 in the Appendix of your textbook. State whether the
correlation is
significant.
c) Confirm the Pearson correlation by ranking the number of hours of study and the test scores and compute the Spearman correlation
d) Show whether his conclusion regarding the significance of the
Spearman correlation is similar to his conclusion regarding the
Pearson correlation.
| No. of hours of study | Test Scores |
| 8 | 84 |
| 10 | 90 |
| 7 | 85 |
| 6 | 71 |
| 5 | 73 |
| 4 | 68 |
| 9 | 86 |
| 12 | 92 |
| 6 | 70 |
| 8 | 80 |
Solutions
t
table as follows:
orchestra answered 1 year agoRelated Solutions
18. A social scientist would like to analyze the relationship between educational attainment (in years of...
18. A social scientist would like to analyze the relationship
between educational attainment (in years of higher education) and
annual salary (in $1,000s). He collects data on 20 individuals. A
portion of the data is as follows:
Salary
Education
33
4
71
2
⋮
⋮
35
0
a. Find the sample regression equation for the
model: Salary = β0 +
β1Education + ε. (Round
answers to 3 decimal places.)
Salaryˆ=Salary^= + Education
b. Interpret the coefficient for Education.
As Education increases by...
A social scientist would like to analyze the relationship between educational attainment (in years of higher...
A social scientist would like to analyze the relationship
between educational attainment (in years of higher education) and
annual salary (in $1,000s). He collects data on 20 individuals. A
portion of the data is as follows:
Salary
Education
32
1
55
1
85
5
55
1
76
8
69
7
114
12
54
0
25
5
36
3
97
5
45
2
62
1
58
9
146
12
58
0
84
2
70
5
129
12
32
0
Find the...
A social scientist would like to analyze the relationship between educational attainment (in years of higher...
A social scientist would like to analyze the relationship
between educational attainment (in years of higher education) and
annual salary (in $1,000s). He collects data on 20 individuals. A
portion of the data is as follows:
Salary Education
38 5
70 5
96 8
55 3
80 9
78 8
108 9
49 0
31 6
37 6
96 5
40 1
69 7
70 7
166 5
63 0
83 1
62 3
131 5
28 0
Find the...
A social scientist would like to analyze the relationship between educational attainment (in years of higher...
A social scientist would like to analyze the relationship
between educational attainment (in years of higher education) and
annual salary (in $1,000s). He collects data on 20 individuals. A
portion of the data is as follows:
Salary
Education
34
2
63
3
79
5
49
5
72
6
79
6
110
11
58
0
24
2
30
5
96
7
50
6
69
6
62
7
156
10
56
0
91
3
61
9
123
8
37
0
a. Find...
A social scientist would like to analyze the relationship between educational attainment (in years of higher...
A social scientist would like to analyze the relationship
between educational attainment (in years of higher education) and
annual salary (in $1,000s). He collects data on 20 individuals. A
portion of the data is as follows:
Salary
Education
38
5
70
5
⋮
⋮
28
0
Click here for the Excel Data File
Salary
Education
38
5
70
5
96
8
55
3
80
9
78
8
108
9
49
0
31
6
37
6
96
5
40
1
69...
6. A social scientist would like to analyze the relationship between educational attainment (in years of...
6. A social scientist would like to analyze the relationship
between educational attainment (in years of higher education) and
annual salary (in $1,000s). He collects data on 20 individuals. A
portion of the data is as follows:
Salary
Education
35
1
67
6
⋮
⋮
32
0
a. Find the sample regression equation for the
model: Salary = β0 +
β1Education + ε. (Round
answers to 2 decimal places.)
Salaryˆ=Salary^= Not
attempted+ Not attempted Education
c. What is the predicted salary for...
A social scientist would like to analyze the relationship between educational attainment (in years of higher...
A social scientist would like to analyze the relationship
between educational attainment (in years of higher education) and
annual salary (in $1,000s). He collects data on 20 individuals. A
portion of the data is as follows:
Salary
Education
35
5
59
5
⋮
⋮
37
0
a. Find the sample regression equation for the
model: Salary = β0 +
β1Education + ε. (Round
answers to 2 decimal places.)
Salaryˆ=Salary^= __________ + __________ Education
c. What is the predicted salary for...
A social scientist would like to analyze the relationship between educational attainment (in years of higher...
A social scientist would like to analyze the relationship
between educational attainment (in years of higher education) and
annual salary (in $1,000s). He collects data on 20 individuals. A
portion of the data is as follows:
Salary
Education
40
3
53
4
⋮
⋮
38
0
Salary
Education
40
3
53
4
80
6
42
2
70
5
50
4
110
8
38
0
42
3
55
4
85
6
40
2
70
5
60
4
140
8
40
0...
A social scientist would like to analyze the relationship between educational attainment (in years of higher...
A social scientist would like to analyze the relationship
between educational attainment (in years of higher education) and
annual salary (in $1,000s). He collects data on 20 individuals. A
portion of the data is as follows:
Salary
Education
35
4
71
1
84
3
52
3
70
7
80
5
107
9
55
0
23
4
33
6
102
6
40
4
67
2
68
5
163
9
55
0
83
8
56
3
125
11
31
0
a. Find...
A social scientist would like to analyze the relationship between educational attainment (in years of higher...
A social scientist would like to analyze the relationship
between educational attainment (in years of higher education) and
annual salary (in $1,000s). He collects data on 20 individuals. A
portion of the data is as follows:
Salary
Education
35
1
67
6
79
2
46
1
69
7
78
5
111
6
62
0
20
4
25
5
100
6
47
5
64
3
66
9
154
7
61
0
87
1
60
3
123
7
32
0
a. Find...
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