McGraw Hill
Glencoe: Online Study Tool: Quiz on Measures of Variability
Students demonstrate advanced mathematics skills with this online quiz. The questions check understanding on measures of variability. Topics include variance, standard deviation, and frequency tables.
Missouri State University
Missouri State U.: Statistics: Measures of Central Tendency and Variability
Provides lengthy explanations of the measures of central tendency - mean, mode, and median - and the measures of variability - range, variance, standard deviation. Graphs of interesting examples are presented as well, skewed...
Science Education Resource Center at Carleton College
Serc: Nitrate Levels in the Rock Creek Park Watershed: Variability
Learning module focuses on measures of variability such as range, variance, and standard deviation which are used to examine nitrate levels and water quality.
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.
Texas Education Agency
Texas Gateway: Tea Statistics: Measures of the Spread of the Data
This resource explains the different measures of center, variability, etc. that are used to describe the spread of statistical data. Includes examples and practice exercises.
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Variability
Get independent practice working with variability. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
Texas Instruments
Texas Instruments: How Close Is Close?
In this activity, students compute statistical measures like the mean, standard deviation, and variance of the data set. They understand how measures of variability can be interpreted.
City University of New York
Measures of Variability
Explanation and examples of variance and standard deviation. Helpful charts and formulas are provided.
Missouri State University
Missouri State University: Introductory Statistics: The Normal Curve
Provides lengthy explanations of the measures of central tendencies - mean, mode, and median - and the measures of variability - range, variance, standard deviation - are given here. Graphs of interesting "side items" are presented as...
Thinkport Education
Thinkport: Algebra Ii: Standard Deviation
Begin by reviewing mean absolute deviation as a measure of variability. Your new learning will begin with standard deviation and understanding the difference between mean absolute deviation and standard deviation.
Illustrative Mathematics
Illustrative Mathematics: Measuring Variability in a Data Set
The purpose of this student task is to develop understanding of standard deviation. Aligns with S-ID.A.2 and S-ID.A.3.
BSCS Science Learning
Bscs: Globe at Night Dark Skies
In this inquiry, learners predict the best place to stargaze in Arizona based on the brightness of the night sky. Students are introduced to the concept of light pollution and Globe at Night, a global citizen science project in which...
BSCS Science Learning
Bscs: Globe at Night Dark Skies
In this inquiry, students predict the best place to stargaze in Arizona based on the brightness of the night sky. Students are introduced to the concept of light pollution and Globe at Night, a global citizen science project in which...
Calculator Soup
Calculator Soup: Standard Deviation Calculator
Standard deviation is a statistical measure of diversity or variability in a data set. A low standard deviation indicates that data points are generally close to the mean or the average value. A high standard deviation indicates greater...
Rice University
Hyper Stat Online Statistics Textbook: Four Basic Statistics Variables
The basic definitions of four statistics variables - quantitative, qualitative, dependent and independent - are provided here.
Science Education Resource Center at Carleton College
Serc: Understanding the Standard Deviation: What Makes It Larger or Smaller?
Students develop a better intuitive understanding of what is meant by variability in statistics. Emphasis is placed on the standard deviation as a measure of variability.
Illustrative Mathematics
Illustrative Mathematics: Understanding the Standard Deviation
The purpose of this task is to deepen student understanding of the standard deviation as a measure of variability in data distribution. The task is divided into four parts, each of which asks students to think about standard deviation in...
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.
Science Education Resource Center at Carleton College
Serc: Exploring Distributions and Graphs Using Cooperative Learning
Using cooperative learning methods, this lesson introduces distributions for univariate data, emphasizing how distributions help us visualize central tendencies and variability. Students collect real data on head circumference and hand...
Illustrative Mathematics
Illustrative Mathematics: 7.sp.3,4 College Athletes
Below are the heights of the players on the University of Maryland women's basketball team for the 2012-2013 season and the heights of the players on the women's field hockey team for the 2012 season. (Accessed at...
Math Planet
Math Planet: Algebra 2: Standard Deviation and Normal Distribution
Gain an understanding of standard deviation and normal distribution by viewing an example and a video lesson.
Curated OER
Measures of Variability
Explanation and examples of vairance and standard deviation. Helpful charts and formulas are provided.
Calculator Soup
Calculator Soup: Variance Calculator
Variance is a measure of dispersion of data points from the mean. Low variance indicates that data points are generally similar and do not vary widely from the mean. High variance indicates that data values have greater variability and...