8 questions
A researcher randomly assigned students to two groups. One group was assigned to watch a violent television program while the other group watched a nonviolent program. The student's behavior was then recorded for incidences of aggressive behavior. Which research method is most appropriate?
experimental
census
sample survey
observational study
Jane Goodall lived among wild chimpanzees intermittently for decades, studying their social and family systems while keeping her interaction with the chimpanzees to a minimum. Which research method is most appropriate?
biased study
census
experiment
observational study
State whether the situation represents an experimental study or an observational study.
Suppose you are trying to determine if tutoring is being used effectively at Tri-C. You look at the academic records of 1000 students and compare that to the tutoring center login records.
Observational study
Experimental study
State whether the situation represents an experimental study or an observational study.
Suppose you are trying to determine how much RTA is used by Tri-C students. Find 100 Tri-C students and randomly split them into two groups. One group uses RTA for transportation and the other group uses other means of transportation.
Observational study
Experimental study
Ken wants to compare how many hours a week that sixth graders spend doing mathematics homework to how many hours a week that eleventh graders spend doing mathematics homework. He randomly selects ten sixth graders and ten eleventh graders and records how many hours each student spent on mathematics homework in a certain week.
What study is described?
Survey
Experimental Study
Observational Study
A large high school wants to know the proportion of students who currently arrive to school on time. Academy Administrators asked a random sample of 𝟐𝟎𝟎 students about their arrival times.
What type of study is described?
Survey
Experimental Study
Observational Study
Dr. Larson was interested in whether classical music helps students perform better on a test. Dr. Larson randomly assigned half of the study's participants to a group that listened to classical music while taking a test. The other half of the participants did not listen to music while taking a test. Which research method is most appropriate?
sample survey
experiment
observational study
census
Ghala wanted to know what the most popular book was in the whole school, so she asked everybody in 11th grade what their favorite book was. Which research method is most appropriate?
Sample Survey
Census
Experiment
Biased Sample