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More Lessons for High School Regents Exam
[Math Worksheets](math-worksheets.html
High School Math based on the topics required for the Regents Exam conducted by NYSED.
Bias data
Examples of bias in surveys
Example:
Sources of bias: How data goes bad
Sources of systematic bias through inadequacies in the measurement, classification and selection processes that produced the dataset, and the need to distinguish between facts and artefacts.
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.
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