Problem Set 2: Pearson Correlation Coefficient Analysis
Research Scenario: A social worker involved in suicide prevention efforts wants to study the relationship between social isolation and possible suicide risk. She collects scores from a sample of 13 patients on two measures: one is a measure of social isolation on which higher scores indicate higher isolation (possible range of scores = 0- 20), and the other is the Suicide Risk Scale (SRS, Plutchik et al., 1989), on which higher scores indicate a higher risk of suicide (possible range of scores = 0-15). These scores are listed in the table below.
Using this table, enter the data into a new SPSS data file and run a Pearson correlation coefficient analysis to test whether there is a relationship between social isolation and possible suicide risk. Create a scatterplot to show the relationship between the variables.
Social Isolation |
SRS |
3 6 8 7 17 2 14 10 7 3 11 9 9 |
1 3 3 5 11 5 11 10 9 6 5 12 5 |
Scatter Plot:
VAR00001=Social Isolation
VAR00002=SRS
Problem Set 2: Pearson Correlation Coefficient Analysis Research Scenario: A social worker involved in suicide prevention...
Problem Set 1: Pearson Correlation Coefficient Analysis Research Scenario: A clinical psychologist would like to determine whether there is a relationship between observer ratings of children’s externalizing behaviors and scores on an established diagnostic interview assessing externalizing disorders (like ADHD, CD, etc.). He administers the diagnostic interview to 25 children and records these scores. He then trains an observer to independently rate carefully-defined externalizing behaviors for each of the 25 children. These scores are totaled for an overall “externalizing behavior...
Problem Set 1: Linear Regression Analysis Research Scenario: A community psychologist is interested in whether people’s self-reported degree of religious belief predicts their self-reported feelings of well-being. She administers two questionnaires to 17 individuals, one of which measures degree of religious beliefs (scores range from 1-20 with higher scores indicating higher degree of belief), and another which measures feelings of well-being (scores range from 1-25 with higher scores indicating stronger feelings of well-being). The psychologist compiles the information listed in...
A counselor wants to study the relationship between use of social media and number of friends one talks to on a daily basis face-to-face. He collects scores from a sample of 15 patients on two measures: one is a a self-report use of social medial on which higher scores indicate more use of social media (possible range of scores = 0- 30), and the other was a single question – “On average, how many different people do you talk to...
Problem Set 2: Research Scenario: In a clinic that focuses on helping victims of domestic minor sex trafficking (DMST), a team of social workers wants to compare the differential effects of treatments for complex trauma. They divide 21 participants into three groups (n = 7 each) that do not differ significantly from one another in terms of pre-treatment trauma symptomology. One group receives Trauma-Focused Cognitive-Behavioral Therapy (TFCBT), one receives Experiential Group Therapy (EGT), and one receives a combination of the...
SPSS: Correlation Use SPSS or Excel to calculate the appropriate correlation coefficient for the following data for “Hours of Exercise” and “Life Satisfaction.” (0 = Not at all satisfied). Provide an APA-style results section write – up. (b) Graph the relationship. HINT: Below you will find instructions for the APA-style write-up. Complete the write-up on a word document and upload the file for submission. Hours of Exercise Life Satisfaction 2 6 0 2 5 13 6 15 1 3 2...
Correlations ACTcommosites ACTComposite2 732 ACTMalhSco Pearson Correlation Sig (2tailed) 49 49 49 732 Sig (2-failed) 49 49 49 ACComposite24 Pearson Correlation 808 656 Sig. (2-tailed) 49 49 49 " Correlation is significant at the 0.01 level (2-tailed) 5. What is observed between the comparison of the correlation between the Math and Composite scores and the correlation between the Math Score and the new ACTComposite24 variable? There occurs a positive correlation (0.732) between the Math and Composite Scores. There occurs a...
Problem Set 1: The One-way ANOVA Research Scenario: Depressed patients are randomly assigned to 1 of 3 therapists. At the end of 3 months, each patient completes a standardized test of depression (higher scores indicate higher level of depression). The patients’ scores are shown below. Analyze the data to determine how effective these 3 therapists are at treating depression (assume that before the treatment, all 3 groups of patients had the same average depression score). Using this table, enter the...
Erika Diaz Your name Assignment 10 Correlation, Scatterplot, and Prediction (due 7/30/20 - 1/4/20)(28 pts) 1. A teacher hypothesizes that the more days of school student misses, the worse the student will do on a final exam (possible scores on the exam range from 0 to 20). She obtained a random sample of 12 students. The data are shown below. Student days missed Final exam score 1 3 16 2 2 17 3 5 13 4 8 7 5 4...
Practice Problem- Correlation The following scores are measures for pull-ups (X) and push-ups (Y). Using the Pearson Product Moment Correlation Coefficient formula, determine the relationship between the two sets of scores. Formula: ΝΣxy- (Σx) (Σ) VINΣx Σ)IN y2-Σy r= Subject Pull-ups (X) Push-ups (Y) х2 Y2 XY 10 15 100 225 150 2 5 5 11 6 10 7 14 3 F 1 bu16 8 9 5 do d) ABCDE GH
Problem Set 1: Chi Square Test of Goodness of Fit Research Scenario: A political psychologist is curious about the effects of a town hall meeting on people’s intentions to support a state proposition that would legalize gambling. He interviews people as they leave and asks them whether their opinion about the proposition has changed as a result of the meeting. He records these frequencies in the table below. Using this table, enter the data into a new SPSS data file...