How many readings are missing

NumPy · from Capstone: analysis without pandas

np.isnannp.bincountnp.argsortnp.percentilemasksnp.unique

Putting the kettle on…

Starting up…

Exercise 1

How many readings are missing? Return the count.

your answer
stuck? the lesson behind it
Capstone: analysis without pandas
Inspect, clean, aggregate, rank — 270 readings and no DataFrame in sight.