Assignment 2 2024

.docx

School

University of British Columbia *

*We aren’t endorsed by this school

Course

218

Subject

Psychology

Date

Apr 3, 2024

Type

docx

Pages

Uploaded by DeaconAtomHawk37

Student Name: Student Number: Section Number: 005 PSYC 218 – Lab Assignment 2 & 3 Correlation & Regression INSTRUCTIONS : This assignment focuses on correlation and regression. You should review Chapters 3, 4 and 5 of "A Student Guide to SPSS" before trying to complete this assignment or Andrew’s video series on SPSS/Jamovi. Use the data file “Assignment 2 Data.sav' with SPSS or Jamovi to complete the assignment. The file contains data from a self-report study. The exact wording of each question and the meaning of the values of coded variables can be found in the Variable View window Learning Objectives: This assignment is designed with three major learning objectives. To calculate correlations and regressions in SPSS or Jamovi. To interpret and apply concepts related to correlations and regressions. The third, is to teach you APA formatting and notation. APA notation: Proper formatting for statistics is a very important skill in academia. Every manuscript requires strict formatting for the results section of the paper. You must have good attention to detail, and remember to properly format your assignment as a last step before you submit. You will be penalized for failure to use proper formatting. A Student Guide to SPSS and/or Andrew’s online guides are the best resources to consult. Marking of lab assignments will be very strict. You may insert additional spaces after any question as needed. In addition, use proper symbols and notation (e.g., s 2 , z , r , R 2 , S Y | X ) when reporting your answers. Round your final answers to 2 decimal places when values are above 1.00 and to 3 decimal places when values are below 1.00. However, make sure to always round regression line slopes (“coefficients” or “ b ”) and Y-intercepts (“constants” or “ a ”) to 3 decimal places. Because we use these regression models for further calculations, so we must retain 3 decimals to avoid rounding error on our final predictions. You will lose points for failure to follow these directions. This lab assignment is due Friday Feb 25 th at 11:59 PM . You must use Canvas to submit your completed assignment. If you submit your assignment late, 1/8 of the total grade will be deducted for each full or partial 24-hour period. Professor Rivers Page 1 DO NOT REPOST OR REDISTRIBUTE ANY PART OF THIS DOCUMENT. DOING SO CAN LEAD TO ACADMIC DISCIPLINE.

Student Name: Student Number: Section Number: 005 PSYC 218 – Lab Assignment 2 & 3 Correlation & Regression 1. Answer the following questions about the relationship between variables ‘anxious’ and ‘prepared’: [5 points total] a. Create a scatter plot of the variables 'anxious' and 'prepared'. Plot the 'anxious' variable on the Y Axis. Copy and paste the scatter plot from your program’s output in the space below. (1pt) b. Is it appropriate to calculate Pearson's r for the variables shown in the scatter plot? Why or why not? Justify your decision. (1pt) I think it’s appropriate to calculate Pearson’s r for the variables shown, because the pattern of the scatterplot depicting the relationship between the “anxious” and “prepared” exhibit a linear negative relationship between the variables. Pearson's r is specifically designed to quantify the strength and direction (positive or negative) of linear relationships between two continuous variables. In this context, where the scatterplot illustrates a relatively normally distributed data and doesn’t show an extreme multivariate outlier, Pearson's r is appropriate for assessing this relationship. The negative relationship suggests that as the prepared variable increase, the “anxious” variable tend to decrease, forming a straight line with a downward slope. By applying Pearson's r, we can obtain a numerical value (ranging from -1 to 1) that measures the strength of the negative correlation between anxiety and preparedness. Professor Rivers Page 2 DO NOT REPOST OR REDISTRIBUTE ANY PART OF THIS DOCUMENT. DOING SO CAN LEAD TO ACADMIC DISCIPLINE.

Student Name: Student Number: Section Number: 005 PSYC 218 – Lab Assignment 2 & 3 Correlation & Regression c. Given the relationship between ‘anxious’ and ‘prepared’ state 3 different causal relationships that could explain this relationship. Hint: a good answer will require you to look up the variable labels in SPSS/Jamovi (3pts) One possible interpretation is that individuals who perceive greater preparedness for PSYC 218 tend to experience lower levels of anxiety about the class. Conversely, those who report lower anxiety levels regarding PSYC 218 may feel more well-prepared compared to their peers. Alternatively, a third variable might contribute to this association. For instance, individuals with prior experience in statistics, having taken a statistics course, may experience reduced anxiety and a heightened sense of readiness for the class. 2. Calculate and report the correlation coefficients for the given pairs of variables in questions a to d. In each part, be sure to use the proper notation to identify the type of correlation coefficient. Then answer the questions in parts e to h. [4 points total] a. 'hrsstudy' and 'motivation' (0.5pt) c. 'spicy food' and 'coffee' (0.5pt) r s = -0.079 r pb = -0.264 b. ‘exercise’ and 'extracurric' (0.5pt) d. 'extravert' and 'coffee' (0.5pt) r s = -0.239 Φ = -0.056 e. Interpret the correlation you reported in question 2a. What conclusions can you draw? (0.5pt) The correlation coefficient indicates a very weak negative correlation between hours studied and motivation. The results suggest there’s a small tendency for decreased motivation to be associated with increased study hours, but the strength of this association is minimal, implying no clear cause-and-effect relationship. f. Interpret the correlation you reported in question 2b. What conclusions can you draw? (0.5pt) The correlation coefficient reveals a moderate negative relationship between 'exercise' and 'extracurricular' participation. An increase in one variable corresponds to a decline in the other, indicating a certain degree of correlation between the changes in these variables. This suggests a potential relationship, such as individuals with greater involvement in extracurricular activities will engage in more exercise, or conversely, individuals with lower exercise levels being less actively involved in extracurriculars. g. Interpret the correlation you reported in question 2c. What conclusions can you draw? (0.5pt) The coefficients show a moderate negative correlation between spicy food and coffee consumption . There's a moderate tendency for individuals who enjoy spicy food less frequently to also drink coffee less frequently or people who like spicy food are regular coffee Professor Rivers Page 3 DO NOT REPOST OR REDISTRIBUTE ANY PART OF THIS DOCUMENT. DOING SO CAN LEAD TO ACADMIC DISCIPLINE.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Recommended textbooks for you

Ciccarelli: Psychology_5 (5th Edition)

Psychology

ISBN:9780134477961

Author:Saundra K. Ciccarelli, J. Noland White

Publisher:PEARSON

Cognitive Psychology

Psychology

ISBN:9781337408271

Author:Goldstein, E. Bruce.

Publisher:Cengage Learning,

Introduction to Psychology: Gateways to Mind and ...

Psychology

ISBN:9781337565691

Author:Dennis Coon, John O. Mitterer, Tanya S. Martini

Publisher:Cengage Learning

Psychology in Your Life (Second Edition)

Psychology

ISBN:9780393265156

Author:Sarah Grison, Michael Gazzaniga

Publisher:W. W. Norton & Company

Cognitive Psychology: Connecting Mind, Research a...

Psychology

ISBN:9781285763880

Author:E. Bruce Goldstein

Publisher:Cengage Learning

Theories of Personality (MindTap Course List)

Psychology

ISBN:9781305652958

Author:Duane P. Schultz, Sydney Ellen Schultz

Publisher:Cengage Learning

SEE MORE TEXTBOOKS

Recommended textbooks for you

Ciccarelli: Psychology_5 (5th Edition)
Psychology
ISBN:9780134477961
Author:Saundra K. Ciccarelli, J. Noland White
Publisher:PEARSON
Cognitive Psychology
Psychology
ISBN:9781337408271
Author:Goldstein, E. Bruce.
Publisher:Cengage Learning,
Introduction to Psychology: Gateways to Mind and ...
Psychology
ISBN:9781337565691
Author:Dennis Coon, John O. Mitterer, Tanya S. Martini
Publisher:Cengage Learning
Psychology in Your Life (Second Edition)
Psychology
ISBN:9780393265156
Author:Sarah Grison, Michael Gazzaniga
Publisher:W. W. Norton & Company
Cognitive Psychology: Connecting Mind, Research a...
Psychology
ISBN:9781285763880
Author:E. Bruce Goldstein
Publisher:Cengage Learning
Theories of Personality (MindTap Course List)
Psychology
ISBN:9781305652958
Author:Duane P. Schultz, Sydney Ellen Schultz
Publisher:Cengage Learning