Data analysis - statistical knowledge (a)

Others 2019-08-10 16:34:20 views: null

1. Simpson's Paradox

2. quartile

Interquartile IQR = Q3 - Q1

3. population variance, sample variance

Proof 1 - About the sample variance denominator n

1. General

Known population variance, μ is the population mean

2. Sample

Biased estimate:

Known as follows:

Biased estimate of demand expectations:

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