Answer:
C. Urban Dictionary
Explanation:
Anyone can literally add anything Lol
I think its the third one but I'm sure
Answer:
a. students
Explanation:
Observational units are the entities whose characteristics we measure. Although in some cases, the observational units are the same as the experimental units, this is not always the case. In this case, the entities that are beong observed and examined are students. This is because the survey designed was given to 50 students in an introductory statistics class.