Bessel's Correction is a correction applied while calculating the sample variance and sample standard deviation where the denominator is (N-1) instead of N, where N is the sample size or the number of observations in the sample. This is done in order to correct the bias in the estimation of population variance (and standard deviations).
An application-oriented question on the topic along with responses can be seen below. The best answer was provided by Natwar Lal on 13th August 2019.
Applause for the respondents- Sreyash Sangam, Sairam Bhoopalam, Ram Rajagopalan, Mohamed Asif, Natwar Lal & Bhavesh Wakde
Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's in-house expert.