spss homework 5 instructions   correlation   part

 

SPSS Homework 5 Instructions

 

Correlation

 

Part One:

 

 

 

Green & Salkind: Lesson 31, Exercises 1, 3, and 4

 

 

 

The following helpful tips are numbered to correspond with the exercise number to which they refer (a dash indicates that no tips are needed):

 

 

 

  1. Paste output (2 pts). Instead of answering a–c from the text, answer the following questions in their place: (2 pts. each)

 

  1. What is the correlation (r value) between number of articles published and overall quality of the instructor?

  2. Is there a significant correlation between overall course quality and overall quality as an instructor? Include the p value to support your answer.

  3. Of all the correlations, which is the only non-significant one?

 

  1. Write your Results section by focusing on the following 2 correlations: a) number of publications with number of times cited by other authors, and b) number of publications with overall course quality. All homework “Results sections” must follow the example given in the Course Content document “Writing Results of Statistical Tests in Current APA Format” (note: you do not have to refer to a figure). Remember to include a decision about the null hypothesis. For a correlation analysis, also be sure to include the direction of the relationship between the variables (positive? negative? none?) in your section. (3)

  2. ——– (3)

 

 

 

Part Two:

 

 

 

  1. A clinical psychologist would like to determine whether there is a relationship between observer ratings of children’s avoidant behaviors and scores on an established diagnostic interview assessing childhood anxiety disorders. He administers the diagnostic interview to 28 children and records these scores. He then trains an observer to independently rate carefully-defined avoidant behaviors for each of the 28 children. These scores are totaled for an overall “avoidant behavior index.” On both the interview and the behavioral ratings, a higher score indicates higher levels of behaviors/symptoms. These scores are listed in the table below. Conduct a Pearson correlation coefficient analysis to determine whether there is a relationship between the interview scores and behavioral ratings for this group of children.

 

 

 

The steps will be the same as the ones you have been practicing in Part One of the assignment—the only difference is that you are now responsible for creating the data file as well. Remember to name and define your variables under the “Variable View,” then return to the “Data View” to enter the data.

 

 

 

Interview (Range 0 to 15)

Avoidant Behavior Index (Range 0 to 30)

6

9

3

4

5

7

13

22

7

20

6

12

5

10

8

15

3

6

4

7

2

7

2

5

6

16

10

23

7

21

12

26

1

4

5

7

3

9

9

6

5

13

8

12

7

16

4

12

3

9

9

18

5

10

3

9

 

 

 

  1. SPSS output (2 pts)

     

  2. Create a simple scatterplot of the relationship between these variables (define interview scores as the x-axis and behavioral ratings as the y-axis). (2)

     

  3. Write a Current APA-style Results section based on your analyses. All homework “Results sections” must follow the example given in the SPSS tutorials and the Course Content document “Writing Results of Statistical Tests in Current APA Format” (note: you do not have to refer to a figure). Remember to include a decision about the null hypothesis. For a correlation analysis, also be sure to include the direction of the relationship between the variables (positive? negative? none?) in your section. (2)

 

 

 

  1. A neuropsychologist is assessing the relationship between visual attention levels and the ability to multitask in a sample of 14 patients. He administers a visual continuous performance test to assess levels of visual attention on which scores can range from 1 to 20: a high score indicates better visual attention levels. He then has each patient complete a task that requires high levels of multitasking. Errors are counted, and a high number of errors indicates poor multitasking skills. The scores are listed in the table below. Conduct a Pearson correlation coefficient analysis to determine what the relationship is, if any, between visual attention and the ability to multitask.

     

 

The steps will be the same as the ones you have been practicing in Part One of the assignment—the only difference is that you are now responsible for creating the data file as well. Remember to name and define your variables under the “Variable View,” then return to the “Data View” to enter the data.

 

 

 

 

 

Visual Attention Test Scores

Number of Errors in Multitasking

3

25

8

18

9

18

4

26

15

6

6

19

18

3

17

4

19

6

6

16

5

14

20

2

17

5

5

23

 

 

 

  1. SPSS output (2)

     

  2. Create a simple scatterplot of the relationship between these variables. (2)

     

  3. Write a current APA-style Results section based on your analyses. All homework “Results sections” must follow the example given in the SPSS tutorials and the Course Content document “Writing Results of Statistical Tests in Current APA Format” (note: you do not have to refer to a figure). Remember to include a decision about the null hypothesis. For a correlation analysis, also be sure to include the direction of the relationship between the variables (positive? negative? none?) in your section. (2)

 

 

 

Part Three: Cumulative Homework

 

 

 

  1. A developmental psychologist is studying whether students in a certain preschool program have better classification skills than preschoolers in the rest of the state. She administers an instrument to assess the classification skills to students in the sample program. The mean score for preschoolers in the state on the instrument is 79. The psychologist tests the preschoolers in the program and records the scores in the table below. Choose the correct test to analyze this question, set up the SPSS file, and run the analysis. Follow the directions under the table below.

     

 

Classification Scores

88

78

82

91

78

87

88

72

76

71

88

85

76

81

90

 

 

 

  1. Paste appropriate SPSS output. (3)

  2. Paste appropriate SPSS graph. (2)

  3. Write a current APA-style Results section based on your analyses. All homework “Results sections” must follow the example given in the SPSS tutorials and the Course Content document “Writing Results of Statistical Tests in Current APA Format” (note: you do not have to refer to a figure). Remember to include a decision about the null hypothesis. (3)

     

 

  1. In a study of the relationship between girls’ playtime activities and self-esteem, 17 girls in a fourth-grade class are selected and randomly assigned to one of two groups. One group plays with a selection of Barbie™ dolls for one hour, and the other group plays with a selection of toy animal figures. At the end of the hour, the girls are given a verbal interview designed to measure self-esteem. Scores range from 1-12, and higher scores = higher feelings of self-esteem. Is there a significant difference between the groups on feelings of self-esteem? Choose the correct test to analyze this question, set up the SPSS file, and run the analysis. Follow the directions under the table below.

 

 

 

Barbie™ Group

4

3

7

9

6

10

4

6

5

Toy Animal Group

10

8

5

11

10

6

7

9

 

 

 

 

  1. Paste appropriate SPSS output. (2)

  2. Paste appropriate SPSS graph. (2)

  3. Write a current APA-style Results section based on your analyses. All homework “Results sections” should follow the example given in the SPSS tutorials and the Course Content document “Writing Results of Statistical Tests in Current APA Format” (note: you do not have to refer to a figure). Remember to include a decision about the null hypothesis. (2)

     

Submit this assignment by 11:59 p.m. (ET) on Monday of Modul







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