Question

You are trying to investigate the following research questions. Identify outcome variable, primary explanatory variable, and a couple of other explanatory variables that you may wan t to control for and write down your empirical model:

a) You are interested in the effect of unemployment rate on crime rate across the United States:

Outcome Y: ____________________________________________________

Primary X: ____________________________________________________

Other controls (other Xs): ____________________________________

b) You are interested in the effect of tariffs on employment:

Outcome Y: ____________________________________________________

Primary Xs: ___________________________________________________

Other controls (other Xs): ____________________________________

Empirical model: ______________________________________________

c) Read the following article “Accepting Facebook friend requests leads to longer life: study”: Outcome

Y: ____________________________________________________

Primary Xs: ___________________________________________________

Empirical model: ______________________________________________

ox47 Study: Social networks good for health WSYM - Lansing, MI NEWS FOX 47 and receive multiple friend requests are less likely to die. The study published in the National Academy of Science, led by Northeastern University professor Williams Hobb and University of California, San Diego, professor James Fowler, showed that there are links between people's health and their social media accounts, whether in person or online "We find that Facebook users who accept more friendships have a lower risk of mortality, but there is no relationship for those who initiate more friendships," the authors wrote. "Mortality risk is lowest for those with high levels of offline social interaction and moderate levels of online social interaction." Hobbs believes people who have moderate interactions on Facebooks are more likely to remain friends with them in person, he said in a Northeastern newsletter

Answer 1

a. Outcome Y : Crime Rate (Effect Variable)

primary X : Unemployment rate (Cause Variable)

Other Xs : Population of people between the age group of 15-59, GDP growth rate in the economy.

b. Outcome Y: Employment

Primary X: Tariff Rate

Other Xs: GDP growth rate, Index of industrial production which is the labor intensive sector.

c. Outcome Y: Average Life expectancy in years

Primary X: Number of friend requests accepted

Control : Time spent on social media, Whether frequent interactions is occurring with the friends on Facebook.