1) Write a research question using some of the variables below and write your empirical model in equation form. Please check the data before you start to understand which variables are constant and which are changing over time. You can benefit from the panel structure of the data to deal with the potential endogenity problems by including country fixed effects in your model. Note that you cannot benefit from the panel data structure in case your main independent variable is not changing over time. This depends on your research question.

location date total_cases new_cases total_deaths new_deaths reproduction_rate icu_patients hosp_patients new_tests total_tests positive_rate total_vaccinations people_vaccinated people_fully_vaccinated new_vaccinations stringency_index population population_density median_age aged_65_older gdp_per_capita extreme_poverty diabetes_prevalence female_smokers male_smokers handwashing_facilities hospital_beds_per_thousand life_expectancy human_development_index country day country (string) date number of total cases number of new cases number of total deaths number of new deaths reproduction rate (expected number of cases directly... number of patients in intensive care units (ICU) number of patients hospitalized number of new tests number of total tests positive rate (ratio of tests that are positive) number of total vaccinations number of people vaccinated number of people fully vaccinated number of new vaccinations The stringency index based on indicators including sc... Number of population Population density median age share of population aged 65 or older GDP per capita (USD) share of population at extreme poverty share of population with diabetes share of smokers among females share of smokers among males share of population with handwashing facilities number of hospital beds per thousand individuals life expectancy human development index country (numeric) days passed starting from first case