Homework #3

Jenny wants to know if there is a relationship between the following two variables: How often romantic partners communicate with one another and satisfaction with their romantic relationships.

After conducting a survey, Jenny determines that the correlation coefficient (or R) is .10. The significance score (p) is 0.015

1. According to the given correlation coefficient, what kind of relationship do the variables share AND how strong is the relationship (1 point)?

2. Is the relationship significant (0.5 points)?

3. What was the statistical test used to derive these findings (1 point)?

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Marcus wants to determine if there is a difference between how much Americans like Eminem (a rap music artist) and Toby Keith (a country music artist).

Marcus asks survey participants to note how much they like these music artists on a scale from 1 to 7 (a 1 being totally dislike; a 7 being totally like).

The average mean score for liking Eminem was 5.12. The average mean score for liking Toby Keith was 5.25. The significance score (p) is 0.328.

4. What is the dependent variable (1 point)?

5. Is there a significant difference between how much survey participants like Eminem and Toby Keith (0.5 points)?

6. What was the statistical test used to derive these findings (1 point)?

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Marcus wants to know if there is a relationship between the following two variables: How often a person thinks robberies occur in their neighborhood (ROB) and how often a person watches TV (TV).

After conducting a survey, Marcus determines that the correlation coefficient (or R) is -.32. The significance score (p) is 0.041.

7. According to the correlation coefficient, what kind of relationship do the variables share AND how strong is the relationship (1 point)?

9. Is the relationship significant (0.5 points)?

10. Yes or no:Can Marcus run a single statistical test to determine if there is a relationship between the following variables?

How often a person thinks robberies occur in their neighborhood (ROB)

AND

How often a person thinks vandalism occurs in their neighborhood (VAN)

ARE BOTH related to

How often a person watches television (TV) (0.5 points)

11. There are two reasons why an observed difference between two groups is not significant. The first reason is that there is actually no significant difference in reality. What is the second reason (1 point)?

12. True or false: Generally, in the social science field, when we are extremely confident that we observed a significant relationship between two variables, we use the term "very significant" (0.5 points)?

13. Fill in the blank: When the significance (or p) score is .05, that means there is a ___% chance that the difference between two groups of observations was a random occurrence (1 point)?

14. True or false: The significance (or p) score tells us how much of a difference there is between two groups of observations (0.5 points).

15. What is the correlation coefficient value of a perfect positive relationship (0.5 points)?

16. What is the correlation coefficient value of a perfect negative relationship (0.5 points)?

16. Regarding content analyses, _____________ is the process for selecting what media should and should not be analyzed. (Hint: This is not sampling!). For example, a researcher might determine that it is important to analyze the headlines of news articles but that it is not important to analyze the images contained in news articles (1 point).

17. Given the entire collection of images below, identify two variables that can be analyzed. For each variable, provide at minimum three codes that can be used to analyze these variables (2 points).