Fourth graders are given data (class test scores) to determine central tendencies, and find information needed to construct a normal distribution curve. They become proficient in calculating mode, median and average.

Students learn about using decimals and fractions by referring to a 19th century currency table. In this decimals and fractions lesson plan, students discuss converting pounds to coins and how they relate to fractions and decimals.

Explanation of the different measures of dispersion (range, interquartile range, and standard deviation) are given.

[Free Registration/Login may be required to access all resource tools.] Learn how to calculate different measures of central tendency, as well as the spread or dispersion of the data.

[Free Registration/Login may be required to access all resource tools.] Decide which measure of central tendency best describes a data set.

[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.

[Free Registration/Login may be required to access all resource tools.] This Concept introduces students to the some of the measures of spread commonly used, such as range, standard deviation and variance.

[Free Registration/Login may be required to access all resource tools.] Decide which measure of central tendency best describes a data set.

[Free Registration/Login may be required to access all resource tools.] Find the mean, median, mode and range of a data set.

This site looks at measures of central tendency and dispersion. Discussed are topics such as standard deviation, mean, median, and mode.

[Free Registration/Login may be required to access all resource tools.] Understanding the mean and statistical deviations.

Students learn about the variance and standard deviation of a random variable. The tutorial investigates the statistics concepts through class notes and examples. Review exercises and a chapter quiz are included.

Do you think the triathlon will be won by someone who is very strong in one event and average in the other two, or someone who is strong in all three disciplines? This activity challenges students to analyse real-life data and use their...

Students learn about the variance and standard deviation of a set of scores. Topics explored are the empirical rule and Chebyshev's rule. The tutorial investigates the statistics concepts through class notes and examples. Review...

Explore how to interpret a large set of data by dividing it up into smaller portions in order to answer statistical questions.

A comprehensive guide for exploring the topic of interquartile range by finding answers to questions like what is meant by interquartile range, how to find interquartile range, and what is the formula for interquartile range. Includes...

This site discusses the range, average deviation, variance, and standard deviation, as well as their relation to dispersion.

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.

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...

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...

Use several strategies and criteria to help Miguel determine the college for him.

Students learn how to calculate the standard deviation by hand. Detailed examples that explore how to use the standard deviation formula are included.