Discuss the below:
The U.S. federal government receives data from 20 state unemployment offices, detailing how many people are receiving unemployment benefits, how many people have run out of unemployment insurance, and how many people are no longer actively seeking employment. After making adjustments for the calendar date, the government publishes a seasonally-adjusted nationwide unemployment rate.
I. What is the population?
II. What is the sample?
III. Is the study observational or experimental? Justify your answer.
IV. What are the variables?
V. For each of those variables, what level of measurement (nominal, ordinal, interval, or ratio) was used to obtain data from these variables?