Question
In: Statistics and Probability
A researcher measures the relationship between sleep medication use (times used per week) and time spent...
- A researcher measures the relationship between sleep medication
use (times used per week) and time spent working (in hours per
week). Answer the following questions based on the results
provided.
Sleep Medication Use Time Spent Working 9 16 4 39 7 18 2 31 - Part A) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.)
- Part B) Multiply each measurement of drug use times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.)
- Part C) Divide each measurement in half for time spent working and recalculate the correlation coefficient. (Round your answer to three decimal places.)
Solutions
Expert Solution
The statistical software output for this problem is:
Also correlation doesn't get affected by change in scale or origin. Hence,
A) r = -0.824
B) r = -0.824
C) r = -0.824
orchestra answered 2 years agoRelated Solutions
A researcher measures the relationship between sleep medication use (times used per week) and time spent...
A researcher measures the relationship between sleep medication
use (times used per week) and time spent working (in hours per
week). Answer the following questions based on the results
provided.
Sleep
Medication Use
Time Spent
Working
8
16
3
39
7
19
2
30
A) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
_____
B) Multiply each measurement of drug use times 3 and recalculate
the correlation coefficient. (Round your answer to three decimal
places.)
_____...
A researcher measures the relationship between sleep medication use (times used per week) and time spent...
A researcher measures the relationship between sleep medication
use (times used per week) and time spent working (in hours per
week). Answer the following questions based on the results
provided.
Sleep Medication Use
9,4, 7, 3
Time Spent Working
16, 38, 18, 31
Compute the Pearson correlation coefficient. (Round your answer
to three decimal places.)
Multiply each measurement of drug use times 3 and recalculate
the correlation coefficient. (Round your answer to three decimal
places.)
Divide each measurement in half...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
7
5
9
5
5
8
6
7
13
6
5
7
3
3
5
5
1
10
12
2
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
(b) Compute the coefficient of determination. (Round your...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
7
5
8
7
4
8
8
7
12
5
5
7
4
2
7
6
1
10
11
4
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
(b) Compute the coefficient of determination. (Round your...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
5
5
9
6
4
8
7
7
11
6
3
7
2
3
6
5
1
10
11
4
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
(b) Compute the coefficient of determination. (Round your...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
6
5
7
5
4
7
8
7
13
5
4
8
4
3
6
4
1
10
11
2
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
(b) Compute the coefficient of determination. (Round...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
5
4
8
5
5
6
8
6
11
5
4
6
3
3
7
5
2
11
12
3
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
____
(b) Compute the coefficient of determination. (Round...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study. Internet Use X = 6 8 5 6 13 5 4 5 3 10
Social Interaction Y= 4 5 7 7 4 7 2 6 9 4
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
(b) Compute the coefficient of determination. (Round...
A researcher measures the relationship between the number of interruptions during a class and time spent...
A researcher measures the relationship between the number of
interruptions during a class and time spent "on task" (in minutes).
Answer the following questions based on the results provided.
Number
of
Interruptions
Time Spent
"On Task"
8
15
4
38
7
18
2
32
Part (a)
Compute the Pearson correlation coefficient. (Round your answer
to three decimal places.)
Part (b)
Multiply each measurement of interruptions times 3 and
recalculate the correlation coefficient. (Round your answer to
three decimal places.)
Part...
A researcher measures the relationship between the number of interruptions during a class and time spent...
A researcher measures the relationship between the number of
interruptions during a class and time spent "on task" (in minutes).
Answer the following questions based on the results provided.
Number
of
Interruptions
Time Spent
"On Task"
9
15
3
37
7
17
2
32
Part (a)
Compute the Pearson correlation coefficient. (Round your answer
to three decimal places.)
Part (b)
Multiply each measurement of interruptions times 3 and
recalculate the correlation coefficient. (Round your answer to
three decimal places.)
Part...
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