Correlations are used to describe the strength and direction of a relationship between two variables. A correlation between two variables is known as a bivariate correlation. In this module the Pearson Product-Moment Correlation will be used when running a correlation matrix. The Pearson correlation coefficient ranges from a value of -1.0 to 1.0. A correlation coefficient is never above 1.0 or below -1.0. A perfect positive correlation is 1.0 and a perfect negative correlation is -1.0. The size of the coefficient determines the strength of the relationship and the sign (i.e., + or -) determines the direction of the relationship. The closer the value is to zero the weaker the relationship and the closer the value is to 1.0 or -1.0 the stronger the relationship. A correlation coefficient of zero indicates no relationship between the variables.

A scatterplot is used to depict the relationship between two variables. The general shape of the collection of points indicates whether the correlation is positive or negative. A positive relationship will have the data points group into a cluster from the lower left hand corner to the upper right hand corner of the graph. A negative relationship will be depicted by points clustering in the lower right hand corner to the upper left hand corner of the graph. When the two variables are not related the points on the scatterplot will be scattered in a random fashion.

Using Polit2SetB dataset, create a correlation matrix using the following variables: Number of visits to the doctor in the past 12 months (docvisit), body mass index (bmi), Physical Health component subscale (sf12phys) and Mental Health component subscale (sf12ment). Run means and descriptives for each variable as well as the correlation matrix.

Follow these steps using SPSS:

1.Click Analyze, then correlate, then bivariate.

2.Select each variable and move them into the box labeled “Variables.”

3.Be sure the Pearson and two-tailed box is checked.

4.Click on the options tab (upper right corner) and check “means and standard deviations.” The exclude cases pairwise should also be checked. Click continue.

5.Click OK

To run descriptives for docvisit, bmi, sf12phys and sf12ment do the following in SPSS: 

1.Click Analyze then click Descriptives Statistics, then Descriptives.

2.Click the first continuous variable you wish to obtain descriptives for (docvisit) and then click on the arrow button and move it into the Variables box. Then click bmi and then click on the arrow button and move it into the Variables box. Then click sf12phys and then click on the arrow button and move it into the Variables box. Then click sf12ment and then click on the arrow button and move it into the Variables box.

3.Click the Options button in the upper right corner. Click mean and standard deviation.

4.Click continue and then click OK.

Assignment: Answer the following questions about the correlation matrix.

1.What is the strongest correlation in the matrix? (Provide correlation value and names of variables)

2.What is the weakest correlation in the matrix? (Provide correlation value and names of variables)

3.How many original correlations are present on the matrix?

4.What does the entry of 1.00 indicate on the diagonal of the matrix?

5.Indicate the strength and direction of the relationship between body mass index and physical health component subscale?

6.Which variable is most strongly correlated with body mass index? What is the correlational coefficient? What is the sample size for this relationship?

7.What is the mean and standard deviation for bmi and doctor visits?

Part II

Using Polit2SetB dataset, create a scatterplot using the following variables: x-axis = body mass index (bmi) and the y-axis = weight-pounds (weight).

Follow these steps in SPSS:

1.Click Graphs, then click on Legacy Dialogs, then click “Scatter/Dot”.

2.Click “Simple Scatter” and then click “Define.”

3.Click on weight-pounds and move it to the Y-axis box and then click on body mass index and move it to the x-axis box.

4.Click OK.

To run descriptives for bmi and weight do the following in SPSS:

5.Click Analyze then click Descriptives Statistics, then Descriptives.

6.Click the first continuous variable you wish to obtain descriptives for (body mass index) and then click on the arrow button and move it into the Variables box. Then click weight-pounds and then click on the arrow button and move it into the Variables box.

7.Click the Options button in the upper right corner. Click mean and standard deviation.

8.Click continue and then click OK.

Assignment:

1.What is the mean and standard deviation for weight and bmi?

2.Describe the strength and direction of the relationship between weight and bmi?

3.Describe the scatterplot? What information does it provide to a researcher?

References 3 references required

 

Required Media

Walden University. (n.d.). Correlations. Retrieved August 1, 2011, from http://streaming.waldenu.edu/hdp/researchtutorials/educ8106_player/educ8106_correlations.html

Required Readings

Gray, J.R., Grove, S.K., & Sutherland, S. (2017). Burns and Grove’s the practice of nursing research: Appraisal, synthesis, and generation of evidence (8th ed.). St. Louis, MO: Saunders Elsevier.

Chapter 23, “Using Statistics to Examine Relationships”

Statistics and Data Analysis for Nursing Research

Chapter 4, “Bivariate Description: Crosstabulation, Risk Indexes, and Correlation” (pp. 59–61 and 68–78)

Chapter 9, “Correlation and Simple Regression” (pp. 197–209)

Click HERE to order a unique plagiarism free paper done by 

professional writers and delivered before your deadline

In the dynamic world we currently live in, it’s becoming increasingly difficult for students to balance academics, co-curricular activities and entertainment among others. Students are required to submit countless assignments in a short time frame. These assignments should not be taken lightly as they form a major part of the grade when it comes to the end of the semester. Understanding the value of education and how these grades are important to students, Infinite Essays has made it its mission in life to offer customized essays to students at an affordable cost.

Click HERE to order a unique plagiarism free paper done by 

professional writers and delivered before your deadline

There are plenty of reasons why you should order a paper with Infinite Essays. We have reliable writers who are also very competent. They have over the years managed to work under tight schedules and deadlines. Whenever you order an essay with Infinite Essays, you are guaranteed a fast turnaround of your project and this is done on time. Other than writing custom papers, our writers provide value added services that include academic assistance in the areas that they have specialized in. We ensure that the work that we offer is free of plagiarism. Infinite Essays does not condone plagiarism in whatsoever manner. Our writers are very experienced and can handle of sorts of formats such as Turabian, Chicago, Harvard as well as APA and MLA. Infinite Essays covers a wide range of topics. At the moment, we specialize with over 68 topics. We understand the importance of maintaining confidentiality when dealing with our clients. It’s for this reason that we will never reveal the identity of our clients to whoever may be interested. Finally, we offer the most competitive rates in the industry.

Click HERE to order a unique plagiarism free paper done by 

professional writers and delivered before your deadline

Whenever you want to make an order with us, you will use our automated online ordering system. If you are having some difficulties of any sort, feel free to contact our live support and they will be more than happy to assist you. Ensure that you fill all the relevant information regarding your order. This is the area where you have to include the deadline of your assignment, the formatting style to be used and even the kind of academic paper you desire. The more information you give to our writers, the better.

Click HERE to order a unique plagiarism free paper done by 

professional writers and delivered before your deadline

Brief explanations of how our services work 1. Provide us with the necessary instructions. Go to the Order Now page and click the order now button. This is the part where you have to attach all the relevant attachments. At the same time, remember to add the instructions sheet here. Once you are sure that you have submitted all relevant information, please submit the final draft to us. 2. The second step will involve paying for the services. This is where an invoice will be sent to you. However, the easiest process is clicking the payment link and following all the prompts that come along. At the moment, all payments are made through PayPal only. 3. Working on your paper. Once you have made the payment, we will assign the order to a writer who will follow the instructions. Remember that our writers will spend countless hour laboring to ensure that the work they provide is meticulously researched. 4. Download your paper. When the writer is finished with the assignment, they will submit it to our writers who will then go through the paper to ensure that the paper has followed all instructions and there are no grammatical errors. We will then forward a copy of the assignment to your email. 5. Tell your friends. We always happy to receive a referral. Whenever a friend tells us that you recommended our services to them, we will give you a 40 percent discount for your next order. Whenever you have provided us with the necessary details, we will forward them to qualified writers who will handle the assignment for you. Remember that the writers will begin working on the assignment immediately. This is the sole reason we encourage our clients to provide their exact specifications during the first time.

Click HERE to order a unique plagiarism free paper done by 

professional writers and delivered before your deadline

Tackling an order may be challenging but we always offer the best. Before the assignment can be passed to you by our writers, it will be passed through a team of qualified editors and proofreaders to ensure that the paper is accurate and of the required quality. Once the editors are satisfied with the assignment, they will forward the assignment to your account and a copy to your email.

Click HERE to order a unique plagiarism free paper done by 

professional writers and delivered before your deadline

Discounts We offer the best prices in the industry. We currently have a 20 percent discount for all of our customers. If you feel the budget is putting a strain on you, contact our live support and they might consider you case. We treat each case differently. Remember that our main goal is to continue with education transformation. At the moment, we only accept payments in form of PayPal.

Click HERE to order a unique plagiarism free paper done by 

professional writers and delivered before your deadline

Why Choose Us While there are many companies in the writing service industry claiming to offer platinum services, none can match the services offered by Infinite Essays. Some of our writers have been with us since 2010. The testimonials that have been written by some of our happy customers is an indication of the good services that we offer.

Click HERE to order a unique plagiarism free paper done by 

professional writers and delivered before your deadline