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  1. Research Hypothesis - Explorable


    The precursor to a hypothesis is a research problem, usually framed as a question.It might ask what, or why, something is happening. For example, we might wonder why …

  2. Null hypothesis - Wikipedia


    The choice of null hypothesis (H 0) and consideration of directionality (see "one-tailed test") is critical.Tailedness of the null-hypothesis test. Consider the question of whether a tossed coin is fair (i.e. that on average it lands heads up 50% of the time) and an experiment where you toss the coin 5 times.

  3. Home 1 | Eskom Expo


    Eskom Expo for Young Scientists is an exposition, or science fair, where students have a chance to show others their projects about their own scientific investigations.

  4. Plausible | Definition of Plausible by Merriam-Webster


    You Can Believe This History of Plausible. Today the word plausible usually means "reasonable" or "believable," but it once held the meanings "worthy of being applauded" and "approving." It comes to us from the Latin adjective plausibilis ("worthy of applause"), which in turn derives from the verb plaudere, meaning "to applaud or clap." Other "plaudere" descendants in English include "applaud ...

  5. How to Set Up a Hypothesis Test: Null versus Alternative ...


    When you set up a hypothesis test to determine the validity of a statistical claim, you need to define both a null hypothesis and an alternative hypothesis. Researchers often challenge claims about population parameters. You may hypothesize, for example, that the …

  6. Hypothesis - Wikipedia


    A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon.For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories. Even though the words "hypothesis" and "theory" are often used ...

  7. Hypothesis Testing: The Basics


    represents the run of 100 coin flips. The Statistics, Mathematically. Say you have a set of observations O and a null hypothesis H 0.In the above coin example we were trying to calculate

  8. Statistical Misconceptions - S. W. Huck


    Disproving the Null Hypothesis. The Misconception. Although the null hypothesis cannot be proven true, it can be proven false.This is because science and hypothesis

  9. Making Sense of the Two-Sample T-Test | iSixSigma


    The two-sample t-test is one of the most commonly used hypothesis tests in Six Sigma work. It is applied to compare whether the average difference between two groups is really significant or if it is due instead to random chance.

  10. The Scientific Method - Make it Solar


    The Scientific Method Sample. 1. Choose your Topic. 2. Identify a Problem. 3. Research the Problem. 4. Form a Hypothesis. 5. Design the Experiments. 6. Test the ...