[email protected]

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.

This is a negative pattern of correlation. Based on the scores it appears the person’s dexterity scores increase while the anxiety decreases. This shows that those individuals who showed greater dexterity,seemed to have less anxiety.

3. Figure the correlation coefficient.

R= -0.979958

4. 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).

Based on the diagram of scores of a persons anxiety and dexterity it can be determined how they effect eachother. Creating a scatter chart is essential when you are trying to determine the correlation between two variables.

5. 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.

· There is a strong correlation that indicates a person who experiences a poor dexterity scores has increased anxiety.

· The more skills a person has the greater their confidence is and less anxiety occurs.

· A persons level of dexterity has an impact on their anxiety.