A researcher wants to know if adolescents’ social skills improved after having p
ID: 3325634 • Letter: A
Question
A researcher wants to know if adolescents’ social skills improved after having participated in a semester long social skills intervention. What type of test(s) should be conducted in order to determine if there is a significant difference in their social skills between the start of the school year and the end of the first semester?
a)One sample t-test
b) 2 one sample t-tests
c) Independent samples t-test
d) Paired samples t-test
A social worker conducted a study in which one group of employees received professional development training. She hypothesized that these employees' mean levels of knowledge will increase from pre-test to post-test and then at one year follow-up. In order to compare the mean scores over three different points in time, what test should be conducted?
a) A repeated independent samples t-test
b) A repeated paired samples t-test
c) A repeated one sample t-test
None of the above
a)One sample t-test
b) 2 one sample t-tests
c) Independent samples t-test
d) Paired samples t-test
Explanation / Answer
A) Option-C) independent sample t-test.
B) Option-A) a repeated independent sample t-test
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