Explanation:rank is also a DataFrame method. 9. Which of the following can potentially change the dtype of a Series ?
A. reindex_like
B. index_like
C. itime_like
D. None of the Mentioned
Answer:A
Explanation:rank is also a DataFrame method. 9. Which of the following can potentially change the dtype of a Series ?
A. reindex_like B. index_like C. itime_like D. None of the Mentioned
Explanation:reindex_like silently inserts NaNs and the dtype changes accordingly. 10. cov and corr supports the optional min_periods keyword.