Curated OER
Sampling Bias And the California Recall
Using a 2002 California Gray David recall vote as an example, young statisticians identify sources of bias in samples and find ways of reducing and eliminating sampling bias. They consider ways to select random samples from a...
Curated OER
The Power of Graphical Display: How to Use Graphs to Justify a Position, Prove a Point, or Mislead the Viewer
Analyze different types of graphs with learners. They conduct a survey and determine the mean, median and mode. They then identify different techniques for collecting data.
Curated OER
Why Would I Owe My Soul to the Company Store?
Sixth graders listen to "Sixteen Tons" by Tennessee Ernie Ford and discuss what it means to owe one's soul to a store. In this mathematics lesson, 6th graders determine what a miner's income was minus his expenses graphing findings in a...