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Why N minus 1 in sample variance | why n-1 in standard deviation | Bessels Correction 

Unfold Data Science
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Why N minus 1 in sample variance | why n-1 in standard deviation | Bessels Correction
#unfolddatascience #datascience #machinelearning
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My name is Aman and I am a Data Scientist.
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Topics for the video:
Why N 1 in sample variance
why n-1 in standard deviation
Bessels Correction
Review and intuition why we divide by n-1 for the unbiased sample
Why Sample Variance is Divided by n-1
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17 ноя 2022

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Комментарии : 9   
@AmarSharma60436
@AmarSharma60436 3 месяца назад
You are one of the best RU-vidr in the field of data science who provide the concepts in a very simple way. Thanks for making such videos.
@srikarr7263
@srikarr7263 Год назад
Thank you so much, the best video till now!
@AIWALABRO
@AIWALABRO Год назад
The way you explain in a short time and very informative way...I always love that🤗🤗
@UnfoldDataScience
@UnfoldDataScience Год назад
Thanks Bharat.
@dipamsarkar6626
@dipamsarkar6626 Год назад
just one line i have not understood as the sample size grows variance of both sample and population comes closer then we have to divide it by n-1 why??
@labtimeRP
@labtimeRP 7 месяцев назад
Because of degree of freedom. If your sample is 2, 3, 10 the mean is 5. Then if you know the mean you need only two values because the third value it will be automatically determined. That is, given the mean and its formula, 5 = (2 + 3 + x)/3, we know that x must be 10
@file4318
@file4318 Год назад
Thank you very much for your video, it was very very good at explaining. But I have one more question, If descriptive statistics do not try to generalize to a population (since there is no uncertainty in descriptive statistics), then why does the sample standard deviation try to best estimate the population mean? Yet it is still considered a descriptive statistic
@sanketsuryawanshi
@sanketsuryawanshi Год назад
Thank you sir 👍
@UnfoldDataScience
@UnfoldDataScience Год назад
Welcome Sanket.hv a nice weekend
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