When conducting an observational study, it is important to choose a topic, select a variable, create a hypothesis, collect the data, and analyze the data for validity of the hypothesis. which additional step is also crucial to the success of the study?
observational study
nonrandomized study
sample survey
experimental study

The right answer for the question that is being asked and shown above is that: "Nonrandomized study."

The additional step is also crucial to the success of the study is that Nonrandomized study. When conducting an observational study, it is important to choose a topic, select a variable, create a hypothesis, collect the data, and analyze the data for validity of the hypothesis. 

Ithink the answer would be knew

C