Statistics chapter 1 homework answers
How do you know if a study is based on experiments or observations?
Let’s talk about what an observational statistical study is. In an observational study, the value of the response variable is measured, but neither the response variable nor the variables that explain it are changed in any way. An observational study is used in fields like epidemiology, social sciences, psychology, and statistics when the researcher can’t control the independent variable for ethical or practical reasons. Observational studies look at the people who take part without making any changes to their lives. This is called “not intervening.” Even though the participants’ behaviour may change while they are being watched, the goal of observational studies is to find out how risk factors, diseases, or outcomes are in their “natural” state.