SPSS Stats Psychology 4 problem set

SIMPLE EASY SPSS QUESTIONS MUST BE FAMILAR WITH PSYCHOLOGY TO WRITE A ONE SENTENCE RESULT OF ANSWERS

SPSS Review HW#5: MAKE-UP HW
Use SPSS to answer the following questions.
1.
You have decided to compare four new textbooks for teaching statistics. You randomly assign the
students in your current course to receive one of the four different books. The students are all
taught by the same instructor and given the same quizzes and assignments. At the end of the
semester, all students are given a final exam. The scores on the final are as follows:
Textbook
Exam Scores
Statistics for the Terrified: 50, 40, 60, 20, 80, 80, 70, 40, 50
Statistics for Dummies:
30, 40, 20, 30, 40, 50, 30, 50
Sexy Statistics:
90, 80, 90, 60, 70, 80, 90, 70, 80, 90
The Singing Statistician:
50, 60, 70, 40, 50, 70, 60, 50, 70
a. What did you find? Write an APA-style results sentence describing your results, with statistics.
Please be sure to run post hoc tests,
b. Create an APA-style table of means (and include subscript differences).
d. What do your results mean? Write a discussion section (a few sentences) to interpret your
results.
2.
Suppose you are interested in testing the idea that people are either dog lovers or cat lovers. The
theory or hypothesis would predict a negative correlation between the number of cats and dogs an
individual owns. You survey a small sample of people at the grocery store and collected the
following data.
Person
# Cats owned
# dogs owned
1
5
2
2
0
0
3
2
1
4
0
1
5
3
3
6
1
2
7
1
0
8
2
2
9
1
0
10
0
0
a. Is there a significant relationship between cat and dog ownership? If the relationship is
significant, report the Pearson r coefficient and describe the relationship in an APA-style
results sentence.
b. Create an APA style scatterplot (be sure to give it a title)
c. What does it mean – write a brief discussion section.
3.
The following are mood rating scores for 12 participants in a study before and after they watched
an episode of the TV series Modern Family. Higher numbers indicate a happier/better/more
positive mood on a scale from 1 (not happy/positive) to 10 (very positive/happy).
Before watching episode
7
5
5
7
6
7
4
7
4
4
5
3
After watching episode
4
7
9
10
7
7
8
7
6
9
6
8
a. What test would you use to answer your question?
b. Use SPSS to conduct this test. What results do you get? Report them in an APA-style
sentence. Include the Cohen’s d value in the sentence.
c. What do your results mean? Interpret them (like what you might put into a Discussion
section).
4.
A researcher wanted to find out if men and women display more fear. A questionnaire was mailed
to 1,000 participants. Subjects were asked to complete ratings of their fears. Zero denoted “no
fear at all” and 100 “maximal fear.” Here are the results:
Gender
Fear
Men
Women
t value
Snakes
22.3
38.1
7.13 ***
Spiders
12.9
27.2
7.29 ***
Injections
17.5
21.7
2.10 *
Dentists
17.9
23.6
2.81 **
* p < .05; ** p < .01; *** p < .001 a. Should you reject the null hypothesis for the difference between men and women on fear of dentists? Explain the basis of your answer. b. Which of the tests is significant at the lowest level (least significant)? Explain the basis of your answer. c. According to the table, which of the following statements about the differences between men and women on fear of snakes is true? a. It is unlikely that sampling error created the difference between the means b. It is likely that sampling error created the difference between the means