Score for this attempt: 12 out of 12.5
Question 1
0..5 pts
It is possible to have a negative correlation but a positive covariance. True or false?
Correct!
False
True
Question 2
0..5 pts
What do the results in the table below show?
Time spent on
Work productivity
Facebook
Work productivity Pearson’s correlation 1.000 –.94
Sig. (2-tail) . .000
N 100 100
Time spent on
Pearson’s correlation –.94 1.000
Facebook
Sig. (2-tail) .000 .
N 100 100
Correct!
In a sample of 100 people, there was a strong negative relationship between work
productivity and time spent on Facebook, r = -0.94, p < 0.001.
, In a sample of 100 people, there was a weak negative relationship between work
productivity and time spent on Facebook, r = -0.94, p <0 .001.
In a sample of 100 people, there was a non-significant negative relationship between
work productivity and time spent on Facebook, r = -0.94, p < 0.001.
In a sample of 100 people, there was a strong negative but non-significant relationship
between work productivity and time spent on Facebook, r = -0.94, p > 0.001.
Question 3
0..5 pts
A correlation of 0.5 would produce a scatterplot in which the slope is:
Flat (horizontal)
Downwards (from the bottom right corner to the top left corner of the graph)
Correct!
Upwards (from the bottom left corner to the top right corner of the graph)
Vertical
Question 4
0..5 pts
Which of the following could not be a correlation coefficient:
-0.27
0.27
Correct!
Question 1
0..5 pts
It is possible to have a negative correlation but a positive covariance. True or false?
Correct!
False
True
Question 2
0..5 pts
What do the results in the table below show?
Time spent on
Work productivity
Work productivity Pearson’s correlation 1.000 –.94
Sig. (2-tail) . .000
N 100 100
Time spent on
Pearson’s correlation –.94 1.000
Sig. (2-tail) .000 .
N 100 100
Correct!
In a sample of 100 people, there was a strong negative relationship between work
productivity and time spent on Facebook, r = -0.94, p < 0.001.
, In a sample of 100 people, there was a weak negative relationship between work
productivity and time spent on Facebook, r = -0.94, p <0 .001.
In a sample of 100 people, there was a non-significant negative relationship between
work productivity and time spent on Facebook, r = -0.94, p < 0.001.
In a sample of 100 people, there was a strong negative but non-significant relationship
between work productivity and time spent on Facebook, r = -0.94, p > 0.001.
Question 3
0..5 pts
A correlation of 0.5 would produce a scatterplot in which the slope is:
Flat (horizontal)
Downwards (from the bottom right corner to the top left corner of the graph)
Correct!
Upwards (from the bottom left corner to the top right corner of the graph)
Vertical
Question 4
0..5 pts
Which of the following could not be a correlation coefficient:
-0.27
0.27
Correct!
