You are working for the meteorological department in Hawaii. Your job is to keep track of the rainfall that 50 sites across Hawaii receive through the year. What type of statistical study is this?

A. theoretical study

B. experiment

C. observational study

D. survey

E. investigative report

If you are working for the meteorological department in Hawaii, and your job is to keep track of the rainfall that 50 sites across Hawaii receive through the year, the type of statistical study that this is is C) observational study.

You are observing the amount of rainfall that happens throughout the year, so that is why this is an observational study.