Define the following terms: a. Observational study b. Designed experiment
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Define the following terms:
a. Observational study
b. Designed experiment
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- Give 5 examples of situations using this: 1. Retrospective Study 2. Observational Study 3. Designed ExperimentIn defining the “output’ of the study, which of the following constructs in the conceptual framework best defines this context? Option 1. Independent variable Option 2. Dependent variable Option 3. Sampling procedure Option 4. Relationship of the variableVitamin E and the Risk of Prostate Cancer: Klien et al (2011) conducted the following study to determine the effect of vitamin E and selenium treatment on the risk of developing prostate cancer in healthy men. A total of 34,887 men from different study sites in the United States, Canada, and Puerto Rico were randomly selected. To be eligible to participate, the men had to take a rectal examination that showed he was not suspicious of having prostate cancer and be aged 50 years or older for black men and 55 years or older for all others. Each man was randomly assigned to receive one of four treatments: selenium, vitamin E, selenium and vitamin E together, or a placebo. The men were followed up after 8 years to see if they had developed prostate cancer or not. The main question of interest is to determine if the risk of developing prostate cancer differs by the treatment taken. The data are summarized in the table below: No Prostate Cancer Prostate Cancer Total Selenium 8,752 8,737 8,702…
- 1. Drawing on your knowledge from previous psychology courses and your imagination, design an experiment or quasi-experiment with an independent variable. Use an outline format and include the following: • The research question you wish to explore. • The independent variable • The dependent variable The population of the group • The sample you would measureE. Identify the most appropriate methods of collecting data to be used in each of the following research topic. Choose your answer below and write the letter on the space provided. A. Interview B. Survey C. Observation D. Registration/census E. Experimentation 1. The effectiveness of Filipino as medium of instruction in teaching mathematics. 2. The changes in the behavior of drug dependents. 3. The physical and behavioral changes in a guinea pig subjected to a new medicine of SARS. 4. The number of private and public utility vehicles in the country. 5. The reaction of some celebrities to the announcement of the presidential bid of an actor. 6. The recreational activities of third year students and its relative effects on their study habits. 7. The values that are acquired by some teachers from watching Korean dramas. 8. The learning styles of students. 9. The characteristics, problems, and needs of the Filipino people. 10. The average temperature in Baguio City from December 1 to…Given: The Centers for Disease Control and Prevention Office on Smoking and Health (OSH) is the lead federal agency responsible for comprehensive tobacco prevention and control. OSH was established in 1965 to reduce the death and disease caused by tobacco use and exposure to secondhand smoke. One of the many responsibilities of the OSH is to collect data on tobacco use. The following data show the percentage of U.S. adults who were users of tobacco for a recent 11-year period (http://www.cdc.gov/tobacco/data_statistics/tables/trends/cig_smoking/index.htm). Year Percentage of Adults Who Smoke 1 23 2 21.6 3 20.9 4 20.2 5 20.2 6 19 7 19.3 8 20.4 9 20.4 10 19.5 11 18.9 And Given: Slope is: bo = 0.2809 Intercept is: b1 = 21.9945 and MSE = 0.6654 Use your model to estimate the number of years that must pass after these data have been collected before OSH will achieve their goal of U.S. adults who were users of…
- Which research design studies only people who are initially free of the disease of interest? Explain how this study design is different from the rest of the research designs a. Case control b. Cohort c. Cross sectional d. ExperimentalA healthcare provider notices an outbreak of foodborne illness among individuals who attended a holiday cookout. Which study type would be most beneficial in identifying the source of the outbreak?Which of the following study designs is most efficient in studying a rare exposure?A. Case controlB. Cross-sectionalC. CohortD. None of the above
- Determine the treatment group, control group, and treatment for the following study:A researcher may want to study whether taking folic acid before pregnancy will decrease the risk ofbirth defectsGive a sample of a research proposal?Which type of observational study is described in the problem statement?