Research is interested in the relationship of video games of high school students' SAT scores, and he hypothesizes that students who play video games for a longer time tend to have a lower SAT score. To test his hypothesis, he randomly selected 60 high school students and asked: 1) how many hours do you spend playing video games each week? 2) what is your SAT score? What is the research question?
Research 1:
Research is interested in the relationship of video games of high school students' SAT scores, and he hypothesizes that students who play video games for a longer time tend to have a lower SAT score. To test his hypothesis, he randomly selected 60 high school students and asked: 1) how many hours do you spend playing video games each week? 2) what is your SAT score?
- What is the research question?
- What is/are the variable(s)? Are they categorical or continual variables?
- What statistical test can be used to answer the research question?
Research 2:
Research is interested in gender differences in the number of selfies posing on Facebook. He hypothesizes that females, in general, post more selfies than males. To test his hypothesis, he randomly selected 50 male and 50 female FB users and asked how many selfies do the post in the most recent month.
- What is the research question?
- What is/are the variable(s)? Are they categorical or continual variables?
- What statistical test can be used to answer the research question?
Research 3:
A research team is interested in the effect of Parent-Child Interaction Therapy (PCIT) in reducing children’s disruptive behaviors for children with disruptive behavior disorders (DBD).
The research team recruited 12 families with a child with DBD and interviewed the parents about the number of disruptive behaviors the child has at home. After three weeks' therapy, the research interviewed again about the child's disruptive behaviors.
- What is the research question?
- What is/are the variable(s)? Are they categorical or continual variables?
- What statistical test can be used to answer the research question?
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