This resource is part of a series on specific topics related to data science: regression, clustering, neural networks, deep learning, decision trees, ensembles, correlation, Python, R, Tensorflow, SVM, data reduction, feature selection, experimental design, cross-validation, model fitting, and many more. To keep receiving these articles, sign up on DSC.

**31 Statistical Concepts Explained in Simple English**

- Hotelling's T-Squared: Simple Definition
- Normal Distribution Probability in Excel: All Versions up to 2016
- Hypergeometric Distribution: Examples and Formula
- Hypothesis Testing
- Hypothesis Test in Excel for the Population Mean (Large Sample)
- Idempotent Matrix: Definition, Examples
- IID Statistics: Independent and Identically Distributed Definition ...
- Independent Random Variables: Definition, Examples
- Independent Samples T Test (Unpaired Samples): Definition, Running
- Independent Variable (Treatment Variable) Definition and Uses
- Index Number: Simple Definition
- Inferential Statistics: Definition, Uses
- Information Bias (Observation Bias): Definition, Examples
- Instrumental Variable: Definition & Overview
- Interaction Effect, Statistical Interactions & Interacting Vari...
- Internal Consistency Reliability: Definition, Examples
- Internal Validity: Definition and Examples
- Inter-rater Reliability IRR: Definition, Calculation
- Interquartile Range (IQR): What it is and How to Find it
- Interval Estimate: Definition, Examples
- Interval Scale & Interval Variable: Simple Definition & Exa...
- Intervening variable: Simple Definition & Examples
- Intraclass Correlation
- Inverse Gamma Distribution: Definition, Mean, Variance, PDF
- Inverse Normal Distribution
- Jaccard Index / Similarity Coefficient
- Jarque-Bera Test
- Joint Probability and Joint Distributions: Definition, Examples
- Kaiser-Meyer-Olkin (KMO) Test for Sampling Adequacy
- Kendall's Tau (Kendall Rank Correlation Coefficient)
- Kolmogorov-Smirnov Goodness of Fit Test
- KPSS Test: Definition and Interpretation
- Krippendorff's Alpha Reliability Estimate: Simple Definition

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