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What are vectors?
Vector operations
Indexing and filtering
30. Exercise 3


Correct! Let's go a little bit further.


Is there anyone who did not improve their running time between the first practice session and the actual race?

Display a logical vector that stores TRUE if the corresponding employee's running_time_improved is less than or equal 0. This, of course, would suggest it took them more time to run the actual race than their first practice session.

Observe the result — do you see some TRUE values?