PSY
315 Week 5 Practice Worksheet
Complete the University of Phoenix Material: Week 5
Practice Worksheet.
Provide
a
response to the following questions.
Note:
Each team member should compute the following questions and submit them to the
Learning Team forum. The team should then discuss each team member’s answers to
ascertain the correct answer for each question. Once your team has answered all
the questions, submit a finalized team worksheet.
Your research team has been tasked with finding the
correlation of the following scenario:
Four research participants take a test of manual
dexterity (high scores mean better dexterity) and an anxiety test (high scores
mean more anxiety). The scores are as follows:
Person Dexterity Anxiety
1 1 10
2 1 8
3 2 4
4 4 -2
Describe the process your research team would go
through by completing the following:
1.
Create
a scatter diagram of the scores, which should be a negative direction.
2.
Describe
in words the general pattern of correlation, if any.
3.
Figure
the correlation coefficient.
4.
Figure
whether the correlation is statistically significant (use the .05 significance
level, two-tailed).
5.
Explain
the logic of what you have done, writing as if you are speaking to someone who
has never heard of correlation (but who does understand the mean, standard
deviation, Z scores, and hypothesis
testing).
6.
Provide
three logically possible directions of causality, indicating for each direction
whether it is a reasonable explanation for the correlation in light of the
variables involved. Explain why.
