Practical exercise
Debunk one chai and cricket correlation in your home
Every Pakistani home has at least one shared belief like Pakistan only wins cricket matches when phupho makes chai, or the load shedding always starts after Maghrib because the meter reader is angry. You will pick one such belief, write it down, and check whether it survives a week of honest tracking.
25 min·starter
Now try it
Debunk one chai and cricket correlation in your home
Stretch
Pick a national level correlation claim next: foreign reserves and the dollar rate, monsoon and dengue cases, exam results and tuition centre attendance. Build the same 2x2 with publicly available data.
Goes into your portfolio
The doc causation-check-NN with the original belief, seven day tracker table, completed 2x2, three alternative causes, and your one paragraph verdict.