Plot the 14-day moving average of the daily change in new COVID-19 cases in Brazil, China, India, Italy, Spain, and the USA: a) First, use the diff() method that was introduced in the Working with...

Plot the 14-day moving average of the daily change in new COVID-19 cases in

Brazil, China, India, Italy, Spain, and the USA:

a) First, use the diff() method that was introduced in the Working with time

series data section of Chapter 4, Aggregating Pandas DataFrames, to calculate the

day-over-day change in new cases. Then, use rolling() to calculate the 14-day

moving average.

b) Make three subplots: one for China; one for Spain and Italy; and one for Brazil,

India, and the USA.