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I am working on the practice problem and need help. Can you help me, O wish to compare it to my work thank you-James Dependent samples t-test I am
I am working on the practice problem and need help. Can you help me, O wish to compare it to my work thank you-James
Dependent samples t-test
I am working on a t-test having repeated measures design such as the same sample completes a pre and post-test and I want to know if there is a difference from one test to the other.
Ø Go to analyze, compare means, paired sample t-test
Ø Select two variables and move into box
Ø Click on OK
Ø The output will give you means for each trial (or pre-post test measure) as well as the t-statistic and significance level
Let's try a few using the data below. Be sure to attach your printouts and answer the questions below.
- First, I want to do a independent sample t-test for gender (IV) and pretest scores (DV)
Were there significant gender differences? How do you know? Interpret the results statistically and in words.
- Then I want to do independent sample t-test for gender (IV) and posttest scores (DV)
Were there significant gender differences? How do you know? Interpret the results statistically and in words.
- Now, I want to do a paired (dependent) sample t-test for pretest and posttest scores.
Were there two scores significantly different? How do you know? Interpret the results statistically and in words.
Data Set Homework 2 (*note 1 = males, 2 = females)
Gender Pretest Posttest
1.00 50.00 80.00
1.00 50.00 70.00
1.00 80.00 70.00
1.00 80.00 50.00
1.00 70.00 50.00
1.00 70.00 50.00
1.00 60.00 60.00
1.00 60.00 80.00
1.00 90.00 80.00
1.00 90.00 90.00
1.00 90.00 80.00
1.00 80.00 90.00
1.00 80.00 90.00
1.00 70.00 70.00
1.00 70.00 80.00
1.00 50.00 80.00
1.00 50.00 70.00
1.00 50.00 70.00
1.00 60.00 60.00
1.00 70.00 80.00
2.00 50.00 70.00
2.00 40.00 50.00
2.00 40.00 80.00
2.00 70.00 80.00
2.00 50.00 70.00
2.00 50.00 80.00
2.00 50.00 90.00
2.00 60.00 90.00
2.00 70.00 90.00
2.00 40.00 80.00
2.00 40.00 80.00
2.00 30.00 70.00
2.00 30.00 70.00
2.00 50.00 60.00
2.00 60.00 80.00
2.00 40.00 80.00
2.00 70.00 80.00
2.00 50.00 70.00
2.00 60.00 70.00
2.00 70.00 90.00
