Question
Participant Stress Level (X) Test Score (Y) 1 18 6 2 3 17 3 12 9...
|
Participant |
Stress Level (X) |
Test Score (Y) |
|
1 |
18 |
6 |
|
2 |
3 |
17 |
|
3 |
12 |
9 |
|
4 |
8 |
22 |
|
5 |
15 |
7 |
|
6 |
7 |
11 |
What's the slope of this data (round to two decimal places)?
What's the Y intercept (round to two decimal places)?
What's the predicted test score for a stress level of 10 (round to two decimal places)?
What's the error of participant 5's score (round to two decimal places)?
What's the standard error of the estimate?
What is the coefficient of determination?
Homework Answers
Answer #1
Using the regression function in Excel we get the following data
What's the slope of this data (round to two decimal places)?
-0.853
What's the Y intercept (round to two decimal places)?
20.96
What's the predicted test score for a stress level of 10 (round to two decimal places)?
y(10) = -0.853*10+20.96 = 12.43
What's the error of participant 5's score (round to two decimal places)?
Error = y(5) -x(5) = -0.853*5+20.96 - 7 = 9.695
What's the standard error of the estimate?
using excel function =STEYX(known Y,Known X) = 4.588
What is the coefficient of determination?
r^2 = 0.570
Not the answer you're looking for?
Similar Questions
The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were...
The computer-science aptitude score, x, and the
achievement score, y (measured by a comprehensive final),
were measured for 20 students in a beginning computer-science
course. The results were as follows.
x
5
15
21
12
23
22
14
19
18
17
19
18
7
5
6
21
19
10
18
13
y
19
19
24
36
27
26
25
28
17
27
21
24
18
18
14
28
21
22
20
21
(a) Find the equation of the line of...
The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were...
The computer-science aptitude score, x, and the achievement
score, y (measured by a comprehensive final), were measured for 20
students in a beginning computer-science course. The results were
as follows. x 5 17 21 12 21 20 14 21 18 17 19 16 9 7 6 21 17 10 18
15 y 19 19 24 36 27 26 25 28 17 27 21 24 18 18 14 28 21 22 20 21
(a) Find the equation of the line of...
The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were...
The computer-science aptitude score, x, and the
achievement score, y (measured by a comprehensive final),
were measured for 20 students in a beginning computer-science
course. The results were as follows.
x
3
17
19
14
21
20
14
19
18
15
17
16
9
7
4
21
19
10
20
13
y
19
19
24
36
27
26
25
28
17
27
21
24
18
18
14
28
21
22
20
21
(a) Find the equation of the line of...
11. The following table shows the class size and the average test score Class Size 15...
11. The following table shows the class size and the average
test score
Class Size
15
17
18
20
21
24
26
29
Average Test
score
85
86
85
82
80
78
75
72
Calculate:
Coefficient of correlation ( r )
Coefficient of determination (r2)
Slope of the regression line
Intercept of the regression line
Equation of the regression line
Predicted value of test score for class size = 22
# 6 The table below shows a measure of the “liberalness” of various American cities and...
# 6 The table below shows a measure of the “liberalness” of
various American cities and a measure of the corresponding asking
price per square foot for housing.
Liberalness
1
0
6
7
10
15
16
19
22
25
26
30
Price
2
3
2
2
0
7
6
8
7
8
4
16
Enter the slope and y-intercept of the regression line,
using liberalness as the independent variable. Round your answers
to two decimal places.
Slope: Intercept:
Enter the correlation...
x 7 0 3 4 3 1 y 6 2 6 5 6 7 Assuming that...
x
7
0
3
4
3
1
y
6
2
6
5
6
7
Assuming that the regression equation is y = 4.433 + 0.300x and
that the SSE = 12.6333, test to determine if the slope is not equal
to zero using alpha = 0.10
a) Test Statistic T = ______ (round to two decimal places)
b) Critical value(s) = _______, _______ (round to 3 decimal
places)
c) P-value = ______
Consider the following set of ordered pairs. x 5 1 2 4 4 y 6...
Consider the following set of ordered pairs.
x
5
1
2
4
4
y
6
1
0
6
5
Calculate the coefficient of determination and test its
significance using α=0.05.
A. Calculate the coefficient of determination.
R^2equals=
B. Determine the null and alternative hypotheses.
Determine the critical F-score, Fα.
Fα=
(Round to three decimal places as needed.)
Calculate the F-score for this test.
F=
(Round to three decimal places as needed.)
Reject or Do not reject?
A random sample of 9 statistics students produced the following data, 1 Score, x 2 Score,...
A random sample of 9 statistics students produced the following
data,
1 Score, x
2 Score, y
66
29
67
66
97
81
22
87
46
13
37
57
71
18
13
67
40
87
where x measures the 1 score and y measures the 2 score. What is
the estimate of the y = a x + b regression slope coefficient?
Data Set: x y 0 4 2 2 2 0 5 -2 6 1 1. Find...
Data Set:
x
y
0
4
2
2
2
0
5
-2
6
1
1. Find intercept b0
2. Find slope B1
3. Find the best fitted linear regression equation
4.Graph observations
5.Graph the linear equation on the same plot
6. Find the coefficient of Determination r²
7. Find the linear correlation coefficient r
8.Interpret r (the correlation between x & y)
1 2 3 4 5 X 7 20 6 17 20 Y 7 19 11 9...
1
2
3
4
5
X
7
20
6
17
20
Y
7
19
11
9
3
The following sample observations were randomly selected:
1. Determine the regression equation. (Negative answers should
be indicated by a minus sign. Do not round intermediate
calculations. Round the final answer to 4 decimal places.)
b= a=
Y'= ------ + ------ X
2. Determine the value of Y' When X is 20. (Do not round
intermediate calculations. Round the final answer to 4 decimal...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 18 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago