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The scientific method refers to techniques used in scientific observation and measurement. How to create studies and experiments.

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Chemistry is the study of matter and energy and the interactions between them. Get facts for the elements in the periodic table. Find chemistry demonstrations and experiments and science fair projects. Get chemistry homework help with worked example ...

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User-friendly introduction to statistics, probability, and survey sampling. Free, online tutorials - a general statistics tutorial and a tutorial tailored to the Advanced Placement (AP) Statistics curriculum. Online tools - statistical tables, probab...

Watch Jon Stewart and The Best F#@king News Team Ever take on the news with full episodes, video clips, extended interviews, and more.