14. Sources of data In the following table, indicate whether the researcher in the scenario is collecting experimental data or observational data. Experimental Observational Scenario Data Data A political scientist reviews survey data on the political views of the student population on his campus in order to study the correlation between class (freshman, sophomore, junior, senior) and political O O affiliation. An economist uses survey data from the Bureau of Labor Statistics to study the relationship between O O age and annual salary. A pediatrician randomly assigns babies to two different groups, giving one group a new type of infant O O formula and the other group conventional formula, in order to study the effects of the new formula. All else equal, economists are more likely to have access to data than to data