T-Tests
T-Test
One-Way ANOVA
Two-Way ANOVA
Correlation
Regression
Chi Square
Practice Problem
Description: Data on the time subjects required to complete a pencil and paper maze when they were smelling a floral scent and when they were not.
Number of cases: 21
Variable Names:
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1.ID:
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2.Sex: 1=male, 2=female
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3.Age: Age in years
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4.Smoker: 1 if subject smoked, 2 if did not
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5.Opinion: "pos" if subject found the odor inherently positive, "indiff" if indifferent, "neg" if inherently negative
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6.Order: 1 if did unscented trials first, 2 if did scented trials first
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7.U-Trial 1: length of time required for first unscented trial
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8.U-Trial 2 : length of time required for second unscented trial
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9.U-Trial 3: length of time required for third unscented trial
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10.S-Trial 1 : length of time required for first scented trial
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11.S-Trial 2 : length of time required for second scented trial
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12.S-Trial 3: length of time required for third scented trial
Download the SPSS file
Conduct a dependent t-test that compares the means scores for utrial1 and strial1.
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1.Write a two-tail research hypothesis and a two tail null hypothesis for this experiment.
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2.Report your results - be specific.
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3.Report and interpret the 95% confident interval
Conduct a independent t-test that compares the means for utrial1 for smokers versus nonsmokers.
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1.Write a two-tail research hypothesis and a two tail null hypothesis for this experiment.
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2.Report your results - be specific.
Conduct a independent t-test that compares the means for utrial1 for men versus women.
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1.Write a two-tail research hypothesis and a two tail null hypothesis for this experiment.
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2.Report your results - be specific.