The Meaning of Percentage: Very Small Percentages
This clip explains how to deal with very small percents, such as those less than 1 percent. As an example, it uses one-fourth percent, which it states is one quarter of 1%. The clip then goes through the steps necessary to express that in decimal fo...
The Meaning of Percentage: Comparing Percentages
This clip provides examples which illustrate the fact that, while percents "have no great mathematical importance, they're just very handy from a practical point of view."
Interpreting Graphs: Examples of Circle Graphs
This clip explores circle graphs in depth. It explains that each part of these graphs is called a sector. The clip explains that the sum of the values in the graph must equal 100%, then provides practical problems, including one in which the value o...
Interpreting Graphs: Examples of Bar Graphs
This clip explores bar graphs in depth, explaining that each bar represents discrete data. The clip also reminds the student that, "
we'll often have to estimate amounts in bar graphs. Remember, the purpose of a graph is to provide a visual image o...
The Meaning of Percentage: Summary: The Meaning of Percentage
This clip summarizes the key points about percentage, stressing at the outset that it's practical to be able to view all fractions with the same denominator. The clip then talks about the different ways we can express the same value in decimal, frac...
Interpreting Graphs: Distorted Graphs
This clip explains that sometimes a distorted graph may be a more practical way to display data, then provides a number of examples, including a bar graph of U.S. population, a line graph of Federal debt, and a line graph of households with cable te...
The Meaning of Percentage: Common Percentages
This clip suggests that we become familiar with the most common percents, because "
in everyday life we just keep working with the same handful over and over."