Next steps in statistics

These resources are designed to help understand some key concepts in statistics.

On
  Video Written Resource Exercises

 An introduction to Statistics for Medics 

 Video    

Variance and standard deviation

      
Introduction to formulae Video Webpage  
Sample variance Sample variance video    
Why we divide by (n-1) Why we divide by (n-1)    

Confidence intervals

      
Calculating confidence intervals for the mean

Video

 Stat Book webpage  

Relative risk and odds ratios

      
Relative risk Osmosis Video Boston University webpage  
Odds ratios

Odds ratio explained

 Psych Scene Hub webpage  
Comparing relative risk and odds ratios Video

Guide to odds ratios

Medical statistics definitions, including definitions of relative risks and odds ratios

  

Introduction to correlation

      
Introduction to correlation

Correlation - the basic idea

Pearson's correlation coefficient

JMP webpage

 Exercises
Different measures of correlation   Measures of correlation  

Simple linear regression

      
Introduction Stat Trek video   Exercises
Making predictions Video Making predictions  

Hypothesis testing principles

      
Principles of hypothesis testing

Hypotheses and Hypothesis tests

P-Values simply explained

 Booklet  

Type I and II errors: power, sample Size, effect size, etc

      
Power analysis

StatQuest video

Introduction

 Power-based calculations 
Sample size calculations  

Basic principles

Power Based Sample Size Calculations

An Introductin to Sample Size Calculations

  
Type I and Type II errors Introduction Slideshare presentation  
Cohen d (effect size) Calculating Cohen d    

Introductory Hypothesis tests 

      
Paired vs unpaired data Paired and independent samples    
One-Sample T-test      
T-tests (paired)

T-test in paired samples

JMP webpage 

Paired t-tests booklet (PDF, XKB)

  
T-tests (unpaired)

T-test in unpaired samples

Laerd Statistics webpage

Booklet

  
Chi-squared test Video

Stat Book exercise

Chi-square test

  
Fisher's exact test Video Fisher’s Exact test (Word, XKB)  

Related information

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