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Understanding Interval Notation in Mathematics
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Mathematicians use something called interval notation to convey information about a range of values in a way that's clear and easy to understand. This form of writing is necessary because intervals are common concepts in calculus, algebra and statistics.
What Are Confidence Intervals in Statistics?
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Science requires that we make guesses, which is why we have confidence intervals.
The Dirty Truth About How Often You Need Your Oil Changed
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How often should you change your oil? If you think it's every 3,000 miles, think again.
How are engine friction and gas mileage related?
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An engine oil analysis may help diagnose car problems. Learn how engine friction and gas mileage are related at HowStuffWorks.
On television, how does closed captioning work?
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On television, how does closed captioning work?
How does copy protection on a video tape work?
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How do VHS tapes prevent you from bootlegging a copy of a movie? Find out how Macrovision works.
How long do car ignitions last?
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How long do car ignitions last? Find out how long car ignitions last at HowStuffWorks.
Do you have to change the oil every 3,000 miles?
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Do you have to change the oil every 3000 miles? Find out if you have to change the oil every 3000 miles at HowStuffWorks.
8 Types of Data That Inform Insights and Relationships
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Different problems require different kinds of information, and understanding the types of data is the first step to choosing the right analysis techniques.
What Is an Oil Life Indicator?
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What is an oil life indicator? Visit HowStuffWorks to learn what an oil life indicator is.