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Which of the following plots are often used for checking randomness in time series?

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Which of the following plots are often used for checking randomness in time series?

(a) Autocausation

(b) Autorank

(c) Autocorrelation

(d) None of the mentioned

This question was posed to me by my college director while I was bunking the class.

Question is from Plotting in Python in section Data Analysis with Python of Data Science

1 Answer

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Best answer
The correct choice is (c) Autocorrelation

Easiest explanation - If the time series is random, such autocorrelations should be near zero for any and all time-lag separations.

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