CK-12 Foundation
Ck 12: Measures of Central Tendency and Dispersion Grades 11 12
[Free Registration/Login may be required to access all resource tools.] This Concept introduces students to the most common measures of central tendency: the mean, median and mode.
Khan Academy
Khan Academy: Median & Range Puzzlers
These conceptual problems really make you think! Getting through this exercise will deepen your understanding of median, range, and data sets in general. Students receive immediate feedback and have the opportunity to try questions...
Calculator Soup
Calculator Soup: Descriptive Statistics Calculator
This is a statistics calculator; enter a data set and hit calculate. Descriptive statistics summarize certain aspects of a data set or a population using numeric calculations. Examples of descriptive statistics include: mean, average,...
Other
Stat Soft: Statistics Glossary
Dozens of statistical terms are defined and illustrated in this glossary.
Khan Academy
Khan Academy: Calculating the Median
Practice finding the median of a data set. Like the mean, the median gives us a sense of the middle or center of the data. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...
Khan Academy
Khan Academy: Calculating the Median: Data Displays
Practice computing the median of data sets presented in a variety of formats, such as frequency tables and dot plots. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Calculating the Mean
Practice calculating the mean (average) of a data set. The mean gives us a sense of the middle, or center, of the data. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...
Khan Academy
Khan Academy: Calculating the Mean From Data Displays
In this exercise, students practice calculating the mean from data displays. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Missing Value Given the Mean
Practice solving some more challenging problems where you are given the mean and asked to find a missing piece of data from the original data set. Students receive immediate feedback and have the opportunity to try questions repeatedly,...
Khan Academy
Khan Academy: Center and Spread Lesson
The resource from Khan Academy provides practice questions for the Praxis Core Math Test. This section reviews probability and statistics questions connected to the center and spread of data in a collection.
Other
Raymond Geddes and Company, Inc.: Analyzing Product Price and Sales Data
Lesson plan provides a real-world application of mean, median, mode, and range.
Other
American Youth Policy Forum: Thinking About Tests and Testing [Pdf]
A comprehensive primer in assessment literacy that seeks to raise awareness of key aspects about tests and testing issues. Explains essential statistical terms associated with testing (mean, modes, medians, distribution, dispersion,...
Math Is Fun
Math Is Fun: How to Find the Median Value
This math tutorial provides an explanation of the median value for a groups of numbers.
University of Illinois
University of Illinois: Keep Off the Median
Resource contains a problem involving a group of test scores. Students are instructed to find the median or middle score. There links to other sites also listed on this one.
Math Is Fun
Math Is Fun: How to Find the Mean
This math tutorial illustrates the mean of a set of data.
Texas Instruments
Texas Instruments: Data and Statistical Methods 1
In this set of exercises, a set of data is provided; students answer questions about mean, median, mode, and quartiles. Questions are multiple choice with solutions provided.
Science Education Resource Center at Carleton College
Serc: Using Your Hair to Understand Descriptive Statistics
Enhance students' understanding of various descriptive measures with a visual interpretation of a mean, median, outlier, and the concept of distance-to-mean.
Palomar Community College District
Palomar College: Mode, Median, Mean Examples
A series of step-by-step worked problems demonstrating how to take a set of data and produce the measures of central tendency. Hints are provided along the way and the final measures are shown for the user to check.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Mean, Median & Standard Deviation
Students learn about mean, median, variance, and standard deviation. The tutorial investigates the statistics concepts though class notes and examples. Review exercises are included.
Oswego City School District
Regents Exam Prep Center: Statistical Studies, Central Tendency, and Dispersion
The mathematics tutorial investigates statistical studies, central tendency, and dispersion. The lesson consists of class notes, calculator tips, examples, and practice problems with solutions. The teacher resource includes an activity...
Mangahigh
Mangahigh: Data: Use the Range and Mode
This site provides students practice with the concept of range and mode. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.
Ducksters
Ducksters: Kids Math: Probability and Statistics Glossary and Terms
Math glossary and terms on probability and statistics for kids. Learn the definitions used in this mathematics subject such as mean, median, and mode on this site.
CK-12 Foundation
Ck 12: Measures of Central Tendency and Dispersion Grade 8
[Free Registration/Login may be required to access all resource tools.] Find the mean, median, mode and range of a data set.
AAA Math
Aaa Math: Central Tendencies Notes
A complete description of mean, median and mode. Interactive games and practice exercises are included.