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Point out the correct statement.

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Point out the correct statement.

(a) Pandas represents timestamps in microsecond resolution

(b) Pandas is 100% thread safe

(c) For Series and DataFrame objects, var normalizes by N-1 to produce unbiased estimates

(d) All of the mentioned

This question was posed to me in an online interview.

I want to ask this question from Computational tools topic in chapter Data Analysis with Python of Data Science

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Correct choice is (c) For Series and DataFrame objects, var normalizes by N-1 to produce unbiased estimates

The explanation is: Pandas represents timestamps in nanosecond resolution.

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