Lesson 14 jamovi Assignment

Correlation & Regression

Intro Statistics for Social Sciences (Professor April Garcia Peck)

Prepare: Watch the jamovi video lessons for Lesson 14. 

Dataset needed: jamovi Dataset - Lesson 14.omv

Assignment Prompt:

Is there a relationship between attraction and anxiety? A social psychologist studying interpersonal attraction surveyed 15 people preparing for a first date a few days away. The researcher asked the following questions:

● How attracted are you to your date? Rate your level of attraction on a scale of 1 (low attraction) to 8 (high attraction).

● How much anxiety are you experiencing thinking about your first date? Rate your anxiety on a scale of 0 (no anxiety) to 12 (high anxiety).

Use jamovi to find the answers to the items below:

1. In terms of strength and direction, which scatterplot below is most like the one you see when you plot Attraction (X) by Anxiety (Y)? _________

2. What is the p-value for the correlation? Report to 3 decimal places. ______

3. What is the correlation coefficient (r) for this test? Include the sign of the correlation in your answer whether it is positive (+) or negative (-). Report to 2 decimal places. ______

4. What is your decision regarding H0 if alpha is .05? (Make sure you provide all conclusion statements!)_____________________________________________________

5. What is the intercept from the linear regression? Report to 2 decimal places. ______

6. What is the slope from the linear regression. Report to 2 decimal places. Include the sign of the slope in your answer whether it is positive (+) or negative (-).  ______

7. Based on these data, if a person reports an attraction rating of 5 towards their dating partner, how much anxiety would we predict they experience before their date? Report to 2 decimal places. ______