# t-test, W test, and Levene's test

Instructions

In this project, examine if the two independent groups of participants obtained significantly different scores on the dependent variable in the data set. Additionally, examine the normality of distribution of scores, and the homogeneity of variance across the two independent groups.

(1) Calculate a t-test for two independent samples using gender as the independent variable and IQ as the dependent variable.

(2) Discuss all results and provide an interpretation that includes:

correct use of descriptive statistics terminology;

analysis of the t-test, W test, and Levene's test as well any other common statistical terms;

conclusions related to the research questions and hypotheses;

and any limitations regarding those conclusions.

Use the Copy Object procedure to paste the SPSS output into a Word document. Be selective about the output that is chosen for presentation. Use only the output that supports your statements of discussion or interpretation.

SEX IQ

1 111

1 102

1 108

1 109

1 118

1 79

1 88

1 102

1 105

1 92

1 131

2 104

1 83

1 84

1 85

1 110

2 121

2 120

2 100

2 94

2 89

2 93

2 128

2 84

2 127

2 106

1 137

1 82

1 106

1 109

1 91

1 111

1 105

1 118

1 103

1 101

1 101

1 95

1 108

1 95

1 98

1 82

2 100

2 100

1 107

1 95

1 97

1 93

1 81

2 89

2 111

2 95

2 106

2 83

1 81

2 115

2 112

2 92

2 85

2 95

2 115

2 91

2 107

2 102

2 86

2 96

2 114

1 105

1 82

1 120

1 88

1 90

2 85

2 106

2 109

1 75

1 91

1 96

1 108

1 86

1 98

1 99

1 95

1 88

1 111

1 103

1 107

1 118

https://brainmass.com/statistics/hypothesis-testing/t-test-w-test-and-levene-s-test-239074

#### Solution Preview

[See attached Word document.]

**INSTRUCTIONS**

In this project, examine if the two independent groups of participants obtained significantly different scores on the dependent variable in the data set.

Additionally, examine the normality of distribution of scores, and the homogeneity of variance across the two independent groups.

Calculate a t-test for two independent samples using gender as the independent variable and IQ as the dependent variable.

Discuss all results and provide an interpretation that includes:

correct use of descriptive statistics terminology;

analysis of the t-test, W test, and Levene's test as well any other common statistical terms;

conclusions related to the research questions and hypotheses; and any limitations regarding those conclusions.

Use the Copy Object procedure to paste the SPSS output into a Word document. Be selective about the output that is chosen for presentation. Use only the output that supports your statements of discussion or interpretation.

**ANSWER**

I cut-and-pasted the Excel data into an SPSS spreadsheet. You can use the discussion below (just erase ...