Data Analysis & Statistics

Numbers and Variables

• Quantitative and Qualitative Data (Australian Bureau of Statistics)
• Univariate and Bivariate Data (Math is Fun)
• Understanding Variables (Mary Dereshiwsky)
• Types of Variables in Statistics and Research (Statistics How To)
• Video: What is a dataset? (Elon University Poll)

Data Tables / Matrixes

• Video: Data matrix and frequency table ~6 min (Research Methods and Statistics / University of Amsterdam)

Level of Measurement

• Levels of Measurement (Joseph Fletcher) 
• Levels of Measurement (Statology)
• Nominal, Ordinal, Interval & Ratio Data (GradCoach)
  • Video: Nominal, Ordinal, Interval & Ratio Data - 10 min (Grad Coach)
• Video: Types of Data - 6 min (Statistics Learning Centre) / Alternative: NOIR - 11 min (NurseKillam)
• Video: NUMBERS Can Do Three Jobs - Levels of Measurement NOIR (Dr. Todd Grande / Research By Design)
• Video: Nominal, Ordinal, Interval & Ratio DAta: Simple Explanation With Examples - 11 min (Grad Coach)
• Nuanced Views (Intermediate):
  • When a Variable’s Level of Measurement Isn’t Obvious (Analysis Factor)
  • Can likert scale data ever be continuous? (Analysis Factor)
  • Brief: Measurement Levels - What and Why? (SPSS Tutorials)
  • Frequently Asked Questions About Level of Measurement  (Pat Dattalo) - History of NOIR

Distributions

• Frequency Distribution (Math is Fun)
• Frequency Distribution (Australian Bureau of Statistics)
• Video: Frequency Distributions and Histograms: 1 2 3 4   (Larah Smith)

Comprehensive

• The Math you need to start (School of Data)
• Analyzing Quantitative Data pdf (UWEX)
• Simple Statistical Analysis (SkillsYouNeed)
• SOCS: A Helpful Acronym for Describing Distributions (Statology)
• Why Not to Trust Statistics (Math With Bad Drawings)
• Video: Describing the Data playlist (David Wallace, George Mason U)

Center / Central Tendency

• Measures of Central Tendency (Australian Bureau of Statistics)
• Averages: Mean, Median and Mode (SkillsYouNeed)
• Measures of Central Tendency / Center (Math Bits Notebook)
• Video: Data Averages: Mean, Median, Mode ~8 min (Data Ready, Georgia State University Library)
• Video: Mean, Median, and Mode: 1 2 3  (Larah Smith)
• Video: Meausres of Center (against all odds)

 Variance / Dispersion

• Standard Deviation and Variance / Formulas (Math is Fun)
• Shapes of Distributions (Statistics How To)
• Basic Concepts (Boston University Biostatistics)
• Video: Standard Deviation (against all odds)

Percentiles

• Percentiles / Outliers (Math is Fun)
• Video: Percentiles and Dispersion: 1 2 (Larah Smith)

Bivariate

• Video: Contingency tables and Scatterplots (University of Amsterdam; Research Methods and Statistics)

Two-Way Tables / Contingency Tables

• Two-Way Tables with Practice (Math Bits Notebook)
• Two-Way Tables in Statistics (StatTrek)
• Percentage Tables (MathCS.org)
• Video: How to read a cross tab (Elon University Poll)
• Video: Two-Way Tables (against all odds)
• Video: Example contingency table (Research Methods and Statistics)