Based off the spreadsheet at

https://docs.google.com/spreadsheets/d/1bTtfjwJJGkcrX6T_4QeAi1gp-KAVzHNwEHOIS4IzzqE/edit?usp=sharing

Please assist with answering the following:

(1) What do you observe from the chart in terms of the relationship between Fed Funds Rates and Inflation Rates?

(2) From the data you can see that the Fed Funds Rate almost reached 20% in the early 1980s. Why were the Fed Funds Rates so high at that time? (You may search online for this question.)

(3) From the chart, look at the patterns of those two rates since 2022-01-01. What have you observed about the relationship between those two rates? Did the recent rate raise by the Fed have some success in tackling inflation down?