Project #72948 - t Test

Data File Description
Variables: gender, gpa
1.    Describe the context of the data set. You may cite your previous description if the same data set is used from a previous assignment.
2.    Specify the variables used in this DAA and the scale of measurement of each variable.
3.    Specify sample size (N).
Testing Assumptions
1.    Articulate the assumptions of the statistical test.
2.    Paste SPSS output that tests those assumptions and interpret them. Properly embed SPSS output where appropriate. Do not string all output together at the beginning of the section.
3.    Summarize whether or not the assumptions are met. If assumptions are not met, discuss how to ameliorate violations of the assumptions.
Research Question, Hypotheses, and Alpha Level
1.    Articulate a research question relevant to the statistical test.
2.    Articulate the null hypothesis and alternative hypothesis.
3.    Specify the alpha level.
Interpretation
1.    Paste SPSS output for an inferential statistic and report it. Properly embed SPSS output where appropriate. Do not string all output together at the beginning of the section.
2.    Interpret statistical results against the null hypothesis.
Conclusion
2.    Analyze strengths and limitations of the statistical test.

Tests of Normality
Kolmogorov-Smirnova    Shapiro-Wilk
Statistic    df    Sig.    Statistic    df    Sig.
gpa    .091    105    .033    .956    105    .001
a. Lilliefors Significance Correction

Independent Samples Test
Levene's Test for Equality of Variances    t-test for Equality of Means
F    Sig.    t    df    Sig. (2-tailed)    Mean Difference    Std. Error Difference    95% Confidence Interval of the Difference
Lower    Upper
gpa    Equal variances assumed    .331    .566    2.004    103    .048    .30184    .15062    .00312    .60056
Equal variances not assumed            1.994    83.974    .049    .30184    .15138    .00080    .60288

 Subject Mathematics Due By (Pacific Time) 06/06/2015 12:00 am
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