Misc to read

How to pick good metrics:
4 Business Metrics You Can’t Afford to Ignore
Measuring What Matters: How To Pick A Good Metric
The Lean Analytics Cycle: Metrics > Hypothesis > Experiment > Act

Amazon.com case study
Amazon’s business strategy and revenue model: A history and 2014 update
All the post from the author worth of reading.

Basic statistics

How to deal with multicollinearity when performing variable selection?

Logistic regression assumptions

Do your data violate linear regression assumptions? , Testing the assumptions of linear regression

One Sample z-Test for Proportions

A website that may help: http://www.statisticshowto.com/post-index/

ANOVA

Linear mixed model implementation in lme4

Fitting multilevel models in complex survey data with design weights: Recommendations

Comparison of two multi-level models and Application of Winbugs