Question
Find the slope from the least-squares regression line for the data below of final grade as...
Find the slope from the least-squares regression line for the data below of final grade as a percent and days absent. What does it tell us about the relationship?
Final Absences
81 1
90 0
86 2
76 3
51 6
75 4
44 7
81 2
94 0
93 1
A. Slope is 94.695 For each day absent the student's final grade increase by 0.947%
B. Slope is -94.695. For each day absent the student's final grade decrease by 0.947%
C. Slope is 6.767 For each day absent the student's final grade increases by 6.767 %
D. Slope is 6.767 For each day absent the student final grade decrease by 6.767%
E. Slope is -6.767. For each day absent the student's final grade decrease by 6.767%
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
Using the accompanying Student Grades data, construct a scatter chart for midterm versus final exam grades...
Using the accompanying Student Grades data, construct a scatter
chart for midterm versus final exam grades and add a linear
trendline. What is the model? If a student scores 7878 on the
midterm, what would you predict her grade on the final exam to
be?
Student
Midterm
Final Exam
1
75
64
2
85
91
3
80
68
4
88
83
5
76
60
6
67
80
7
78
74
8
95
94
9
67
61
10
93
87
11...
The data below represent the number of days absent, x, and the final grade, y, for...
The data below represent the number of days absent, x, and the
final grade, y, for a sample of college students at a large
university. Complete parts (a) through (e) below.
No. of absences, x
0
1
2
3
4
5
6
7
8
9
Final grade, y
88.6
85.7
82.6
80.1
77.177.1
72.672.6
63.2
67.4
64.4
61.4
(a) Find the least-squares regression line treating the number
of absences, x, as the explanatory variable and the final grade,
y, as...
Student Grades Student Test Grade 1 76 62 2 84 90 3 79 68 4 88...
Student Grades
Student
Test
Grade
1
76
62
2
84
90
3
79
68
4
88
84
5
76
58
6
66
79
7
75
73
8
94
93
9
66
65
10
92
86
11
80
53
12
87
83
13
86
49
14
63
72
15
92
87
16
75
89
17
69
81
18
92
94
19
79
78
20
60
71
21
68
84
22
71
74
23
61
74
24
68
54
25
76
97...
Below represent scores on an exam, each entry one score for one student 40 99 59...
Below represent scores on an exam, each entry one score for one
student
40
99
59
98
63
63
64
65
67
35
67
67
68
70
71
71
71
46
72
72
60
73
74
74
74
75
97
75
62
76
76
76
76
76
77
57
77
98
77
63
78
78
78
79
79
80
80
80
80
80
81
81
92
81
93
82
82
83
83
83
83
83
83
83
84
84
84...
Question 13 Use this problem for #13-16. Dr. Armstrong thinks that a student's final grade is...
Question 13
Use this problem for #13-16.
Dr. Armstrong thinks that a student's final grade is related to
his/her number of absences. She took a sample of 9 students and
found their number of absences and their final grades.
Number of absences x
0
1
2
2
3
3
4
5
6
Final grade y
96
91
78
83
75
62
70
68
56
The correlation coefficient is .912.
True
False
Question 14
The equation for the regression line is...
A least squares regression line to predict a student’s Stat145 test score (from 0-to-100) from the...
A least squares regression line to predict a student’s Stat145
test score (from 0-to-100) from the number of hours studied was
determined from a class of 55 Stat145 students: ̂ = 46.2 + 2.71x.
One student in the class studied for 16 hours and scored 87 on the
exam. (a) (5 pts.) What is the predicted value of this student’s
Stat145 exam score? (b) (5 pts.) What is the residual for this
student? (c) (5 pts.) Explain what the slope...
Find the slope of the equation of the least-squares regression line for the following data set....
Find the slope of the equation of the least-squares regression
line for the following data set.
x
y
59
-119
24
-35
50
-107
47
-73
41
-78
72
-117
40
-55
Round your answer to two decimal places.
(1 point) A study was conducted to detemine whether a the final grade of a student...
(1 point) A study was conducted to detemine whether a the final
grade of a student in an introductory psychology course is linearly
related to his or her performance on the verbal ability test
administered before college entrance. The verbal scores and final
grades for 1010 students are shown in the table below.
Student
Verbal Score x
Final Grade y
1
26
28
2
58
68
3
34
38
4
63
76
5
35
44
6
58
71
7
67...
In Python... Write a program that calculates a student’s final grade in this course. The program...
In Python...
Write a program that calculates a student’s final grade in this
course.
The program should:
Display a message stating its goal
Prompt the user to enter a student’s average grade for the
weekly assignments, grade for mid-course project and grade for
final project
Calculate the final grade based on these percentages...
Assignments = 60%
Mid-course & Final Project = 40% (20% each)
A
A-
B+
B
B-
C+
C
C-
D+
D
D-
E
100-94
93-89
88-85
84-82...
Run a regression analysis on the following data set, where yy is the final grade in...
Run a regression analysis on the following data set, where yy is
the final grade in a math class and xx is the average number of
hours the student spent working on math each week.
hours/week
x
Grade
y
7
65.8
8
65.2
9
58.6
10
76
11
77.4
11
64.4
13
70.2
16
98.4
17
91.8
19
100
State the regression equation y=m⋅x+by=m⋅x+b, with constants
accurate to two decimal places.
What is the predicted value for the final...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 6 minutes ago
asked 23 minutes ago
asked 26 minutes ago
asked 28 minutes ago
asked 40 minutes ago
asked 40 minutes ago
asked 40 minutes ago
asked 40 minutes ago
asked 40 minutes ago
asked 40 minutes ago
asked 41 minutes ago
asked 45 minutes ago