1. What is the "Phillips Curve"?

2. Why do inflation and unemployment tend to be inversely related?

3. How did the Phillips Curve look differently between pre-pandemic period vs. after-pandemic (recovery) period?

What were the possible explanations?

4. Why a negative inflation (i.e., deflation) isworse than inflation?

Based on the links below, please assist with answering the following:

Unemployment rate, GDP growth and Inflation:

https://www.thebalance.com/unemployment-rate-by-year-3305506#:~:text=%20%20%20%20Year%20%20%20,Hoover%27s%20tax%20hikes%20%2047%20more%20rows%20

Phillips Curve (from Khan Academy):

https://www.youtube.com/watch?v=v7ZWTZ9NgU4

The Phillips Curve (from NPR "The Indicator" podcast):

https://www.npr.org/2021/04/29/992134185/inflation-unemployment-and-the-phillips-curve

The Recent Steepening of Phillips Curves:

https://www.chicagofed.org/publications/chicago-fed-letter/2023/475

Various Inflation Rates vs Unemployment:

https://www.yardeni.com/pub/phillipscurve.pdf