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Questions that seek a conceptual or non-mathematical understanding of statistics.

1 vote
0 answers
126 views

Concrete example of what Sufficient Statistics is [closed]

Having read articles to try to understand Sufficient Statistics. Sufficient statistics for layman A sufficient statistic summarizes all the information contained in a sample so that you would make …
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3 votes
1 answer
671 views

Is it really appropriate to say "standard deviation" is variation or dispersion

Question I have been struggling to convince myself that SD (standard deviation) is about variation or dispersion. Standard deviation From Wikipedia, the free encyclopedia In statistics, the standard …
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2 votes
0 answers
819 views

Explanation on why SD is better than MD [duplicate]

Trying to understand why Standard Deviation (SD) is widely accepted as a measure of dispersion instead of Mean Deviation (MD) $\frac {1}{N}\sum|X-\mu|$. Revisiting a 90-year-old debate: the advantages …
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1 vote

How would you explain Markov Chain Monte Carlo (MCMC) to a layperson?

What can be confusing when learning MCMC Text book or article that: Immediately starts with math formulas on how to do MCMC with no intuition nor idea behind explained. … Related Youtube video Markov Chain Monte Carlo gives the intuition that MCMC is like a mountain trekking to figure out the shape by random-walk the mountain. …
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2 votes

Bottom to top explanation of the Mahalanobis distance?

STAT 505 Applied Multivariate Statistical Analysis - 4.6 - Geometry of the Multivariate Normal Distribution (PP 6.7) Geometric intuition for the multivariate Gaussian (part 2) Deriving the formula …
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