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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
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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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