Why is the code failing?

Question

https://code.sololearn.com/chNhGwUiqQn0/?ref=app

Answer 1

3 things:

* when you submit the code, remember to output ONLY the result, not anything else (not the summary, for example)

* the relevant columns are called Age, Pclass and Survived. Check the spelling of the later 2 in your code

* use tapply to get the mean Pclass grouped by Survived