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School of Dentistry: Evidence-Based Practice: Understanding Statistics

Resources to support EBP: EBD

Books and eBooks

Understanding Statistics

Statistics: 1           : a branch of mathematics dealing with the collection, analysis, interpretation, and presentation of masses of numerical data

  1. 2:  a collection of quantitative data

                                                                                                                             -Merriam Webster online

Other terms used in discussing and using statistics:

variance :  expressed as standard deviation, represents the average distance of each score from the mean

frequency distribution :  commonness of the values of a variable (how often it occurs in the data set)

dispersionthe scattering of the values of a frequency distribution from the mean

range : difference between the least and greatest values of the variable of a frequency distribution


Data Repositories

The Electronic Statistics Textbook

The Electronic Statistics Textbook

  • offers training in the understanding and application of statistics and data mining
  • covers a wide variety of applications, including laboratory research (biomedical, agricultural, etc.), business statistics, credit scoring, forecasting, social science statistics and survey research, data mining, engineering and quality control applications

Visual Tutorial: Standard Deviation in 5 Steps

The Normal Distribution Empirical Rule
*Provides an estimation of the spread of data given the mean and standard deviation of a data set that follows the standard, normal distribution

Visual Tutorial: Mean, Median, Mode

Visual Tutorial: Standard Deviation Explained

Statistical Tests

Faculty recommended video: "Choosing a Statistical Test"


American Dental Association and Evidence Based Dentistry: Statistic Tutorials

Five tutorials provide illustrative understanding of statistical concepts including null-hypothesis, p-value and confidence intervals.  Click on the graphic below to access:





click on the graphic below: "Interpreting a Forest Plot of a meta-analysis"

     - created and presented by Dr. D. Slawson for CIS Clinical Information Sciences

All videos have close captioning available and are outside links.

All videos used with permission and for educational purposes only. Thanks to Jeremy Jones and Kahn Academy.  Tyson.C 2017