## STATISTICS EDR 8101-Imaginea researcher is interested in the relationships among

Question
SPSS Week 6

Imaginea researcher is interested in the relationships among teachers’ self-esteem andproductivity. A randomly selected sampleof 40 teachers completed a questionnaire including a number of demographicquestions as well as measures to assess their self-esteem and productivity. Below are the demographic data andparticipants’ responses for the self-esteem measure (100-point scale) and theproductivity measure (50-point scale). Usethese data to answer the questions below (these data have already been enteredin a SPSS file; see the note below the data table).

Gender

(M = male, F = female)

Self-esteem scores

(ScoreOne)

Productivity Scores

(ProdOne)

M

64

25

M

68

28

F

74

36

M

75

38

F

76

34

F

79

36

F

80

40

F

82

41

M

68

22

M

70

38

F

74

39

F

76

34

F

78

38

F

79

37

M

82

45

M

85

46

F

71

30

M

73

34

F

75

33

M

77

36

M

78

38

M

80

42

F

83

46

F

86

49

M

73

37

F

74

38

M

77

32

M

77

35

F

78

36

M

81

45

F

84

49

F

87

48

F

77

36

M

71

33

F

75

34

F

76

36

M

79

38

M

83

48

F

89

48

F

91

49

Downloadthe SPSS data set: teachersurvey.sav[BR1] . Not all of the variables in that SPSS filewill be used for this assignment.

In this SPSSassignment, use the tools learned in this course thus far, with an emphasis onthe tools acquired in Gravetter and Wallnau (2013) Chapters 9 and 10 and Georgeand Mallery (2014) Chapter 11.

1.) Thereare three main assumptions needing to be satisfied before using theindependent-samples t-test for testing differences between the genders. Use SPSS to generate the output needed totest the assumptions. Please discusseach one and explain whether each has been met using SPSS output as needed toinclude histograms, plots, and Levene’s test. Keep in mind if the population value isunknown, it is permissible to infer from sample values. Regardless of sample size, test whether theseassumptions are met.

2.) Pleaseproduce an SPSS output for an independent-samples t-test comparing male andfemale scores on self-esteem.

a.) What are the null and alternative hypotheses?

b.) What is the value of Cohen’s d? Is it small, medium, or large? Use the following web site to calculateCohen’s d: http://www.uccs.edu/~lbecker/

c.) Report the results in APA format.

d.) What might be concluded from this hypothetical study(males vs. female self-esteem test)? Inthis conclusions, please consider possible limitations of the study as well asrecommendations for future research.

3.) The researcher conducted an analysis for heremployer and found a t-value just short of the critical region using atwo-tailed test. She has to fail toreject the null hypothesis, but fears this may affect her research funding andpossibly her employment. Then she remembers one-tailed tests have larger criticalregions. Is it ethical for to change heroriginal hypothesis to a one-tailed test? Why or why not?