Other
Magoosh: Statistics Fundamentals
An online course on the fundamentals of statistics including video lessons in Mean, Median, and Mode; Weighted Averages; Quartiles and Boxplots; Range and Standard Deviation; Normal Distribution; Z-scores; Intro to Inferential...
Purple Math
Purplemath: Mean, Median, Mode, and Range
Mean, median, and mode are three kinds of "averages". The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers. To...
Palomar Community College District
Palomar College: Behavioral Science Statistics: Variance and Standard Deviation
A series of step-by-step worked problems demonstrating how to take a set of data and produce the variance and standard. Hints are provided along the way and the final measures are shown for the user to check.
CK-12 Foundation
Ck 12: Algebra Ii: 5.5 Sampling Variability
This section explores the concept of sampling variability in the sample proportion. It will address the effect on the mean and standard deviation of a sample distribution as the sampling size changes.
CK-12 Foundation
Ck 12: Algebra Ii: 5.8 Evaluating Reports
Learn to analyze examples of claims presented in the media that involve estimating a population proportion and population mean.
CK-12 Foundation
Ck 12: Algebra Ii: 5.7 Margin of Error
This section introduces the concept of Margin of Error. Explore how results from surveys are most accurate within a range of values, and use this concept to make inferences about the preferences of a full population, given data from a...
University of Glasgow
Statistics Glossary: Stratified Sampling
An online statistics glossary which contains the definition for stratified sampling. Lists reasons for using stratified sampling instead of simple random sampling and gives an example situation in which stratified sampling may be used.
Rice University
Hyper Stat Online Statistics Textbook: Population
A definition of "population" as it refers to statistics.
McGraw Hill
Mc Graw Hill Education: Glencoe: Statistics and Probability: Luck of the Draw
Instructions for creating and playing a simple card game through which students can practice calculating the interquartile range from a set of numbers.
ClassFlow
Class Flow: Analyzing Data Mean, Median and Mode
[Free Registration/Login Required] Explores ways of analyzing data in a table.
Varsity Tutors
Varsity Tutors: Hotmath: Statistical Questions
Explains what a statistical question is and when and how central tendency and the spread of the data are relevant.
BBC
Bbc: Standard Deviation
A demonstration of how to find the standard deviation of a set of data. Several examples and a practice test are offered.
University of Glasgow
Statistics Glossary: Cluster Sampling
Contains a definition for what cluster sampling is, when it is used, and also provides an example situation for when it would be used.
University of Glasgow
Statistics Glossary: Target Population
Go to this site for a brief definition for what the target population of a sample is along with an example problem.
University of Glasgow
Steps Statistics Glossary: Sample Mean
The definition of a sample mean is provided along with the symbol commonly used for it and an example to show the formula in action. A link to "expected value" - a related topic - is provided.