Explore the effects of the outliers on the mean.

This teacher-student reference provides a 50-by-50 multiplication table as a PDF file that prints on four pages.

This is a picture of Revere's engraving depicting the Boston Massacre.

An image of "Tutor and Pupil", created by Nicolas De Largilliere in 1685 (Oil on canvas, 146 x 115 cm).

Find a quick, concise explanation of the distance formula. An example is given and clearly explained.

Find a quick, concise explanation of how to graph linear two variable inequalities. An example is given and clearly explained.

Find a quick, concise explanation of a Venn Diagram. Examples are given and clearly explained.

Video lesson explores what a fraction is, why it is important, and the concept of a fraction as part/whole. [8:43]

Clear image of Nathanael Green with brief biographical information.

Find a quick, concise explanation of Compound Inequalities. An example is given and clearly explained for an "or" type and an "and" type of compound inequality.

Find a quick, concise explanation of graph theory. Examples are given and clearly explained.

Find a quick, concise explanation of how to graph a one variable inequality. An example is given and clearly explained.

Find a quick, concise explanation of a number line. Several examples are given and clearly explained.

Find a quick, concise explanation of what a polyhedra is. Examples are given and clearly explained.

Find a quick, concise explanation of the positive and negative exponents of the powers of 10. A table of examples are given and clearly explained.

Find a quick, concise explanation of whole numbers using a diagram. An example is given and clearly explained.

Find a quick, concise explanation of how to find the degree of a vertex in graph theory. An example is given and clearly explained.

Find a quick, concise explanation of an endvertex. An example is given and clearly explained.

Find a quick, concise explanation of what a scatter plot is. Several examples are given and clearly explained.

Six problems present various aspects of using scatter plots. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to check each step of...

This is a "tour" of portrait paintings done by 18th Century French painters, Jean Simeon Chardin, Nicolas de Largilliere, Jean-Marc Nattier, Jean-Baptiste Greuze, and Jean-Antoine Houdon. There are ten portraits, each with an extensive...

The School of Mathematics and Statistics at the University of St. Andrews, Scotland, presents biographical information about al-Khwarizmi, regarded as the founder of algebra.

Early biographical information about his family, images of his self-portraits, his travels, his influences, and his career as an artist. Many links to photos and other sites.

Born in San Antonio, Texas, chemist Ava Josephine McAmis (1897-1991) attended Randolph-Macon Woman's College and then worked as a tutor at the University of Texas while earning her master's degree. That work led to a position at Yale...