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Plausible | Definition of Plausible by Merriam-Webster

Fill in the data table below to gather your data, and use it to help you generate your hypothesis, outcomes, and ..

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CORRECTION: When newspapers make statements like, "most scientists agree that human activity is the culprit behind global warming," it's easy to imagine that scientists hold an annual caucus and vote for their favorite hypotheses. But of course, that's not quite how it works. Scientific ideas are judged not by their popularity, but on the basis of the evidence supporting or contradicting them. A hypothesis or theory comes to be accepted by many scientists (usually over the course of several years — or decades!) once it has garnered many lines of supporting evidence and has stood up to the scrutiny of the scientific community. A hypothesis accepted by "most scientists," may not be "liked" or have positive repercussions, but it is one that science has judged likely to be accurate based on the evidence. To learn more about , visit our series of pages on the topic in our section on how science works.

Hypothesis Testing - Six Sigma Material

: The word isn't used much in everyday language, but when it is, it is often applied to ideas that have been shown to be untrue. When that's the case — when an idea has been shown to be false — a scientist would say that it has been falsified. A falsifi idea, on the other hand, is one for which there is a conceivable that might produce evidence proving the idea false. Scientists and others influenced by the ideas of the philosopher Karl Popper sometimes assert that only falsifiable ideas are scientific. However, we now recognize that science cannot once-and-for-all prove any idea to be false (or true for that matter). Furthermore, it's clear that evidence can play a role in supporting particular ideas over others — not just in ruling some ideas out, as implied by the falsifiability criterion. When a scientist says , he or she probably actually means something like , the term we use in this website to avoid confusion. A testable idea is one about which we could gather evidence to help determine whether or not the idea is accurate.

Steps in the Data Analysis Process

Determine the null hypothesis and alternative hypothesis for making decisions regarding pricing comparison. Competency 4: Assess the use of qualitative data to support business decision-making. Analyze a sample selection technique to gather data for testing price comparison hypotheses.

: In everyday language, the word usually refers to an educated guess — or an idea that we are quite uncertain about. Scientific hypotheses, however, are much more informed than any guess and are usually based on prior experience, scientific background knowledge, preliminary observations, and logic. In addition, hypotheses are often supported by many different lines of evidence — in which case, scientists are more confident in them than they would be in any mere "guess." To further complicate matters, science textbooks frequently misuse the term in a slightly different way. They may ask students to make a about the outcome of an experiment (e.g., table salt will dissolve in water more quickly than rock salt will). This is simply a prediction or a guess (even if a well-informed one) about the outcome of an experiment. Scientific hypotheses, on the other hand, have explanatory power — they are explanations for phenomena. The idea that table salt dissolves faster than rock salt is not very hypothesis-like because it is not very explanatory. A more scientific (i.e., more explanatory) hypothesis might be "The amount of surface area a substance has affects how quickly it can dissolve. More surface area means a faster rate of dissolution." This hypothesis has some explanatory power — it gives us an idea of a particular phenomenon occurs — and it is testable because it generates expectations about what we should observe in different situations. If the hypothesis is accurate, then we'd expect that, for example, sugar processed to a powder should dissolve more quickly than granular sugar. Students could examine rates of dissolution of many different substances in powdered, granular, and pellet form to further test the idea. The statement "Table salt will dissolve in water more quickly than rock salt" is not a hypothesis, but an expectation generated by a hypothesis. Textbooks and science labs can lead to confusions about the difference between a hypothesis and an expectation regarding the outcome of a scientific test. To learn more about scientific hypotheses, visit in our section on how science works.

Can you do a hypothesis test to show that more thanhalf of Lansing households in the proposed district were against thesewer project? (You’re trying to show a majority against, socombine “supporting” and “neutral” since those arenot against.)

Step 5: Analyzing Data and Interpreting Results

CORRECTION: This misconception may be reinforced by introductory science courses that treat hypotheses as "things we're not sure about yet" and that only explore established and accepted theories. In fact, hypotheses, theories, and laws are rather like apples, oranges, and kumquats: one cannot grow into another, no matter how much fertilizer and water are offered. Hypotheses, theories, and laws are all scientific explanations that differ in breadth — not in level of support. Hypotheses are explanations that are limited in scope, applying to fairly narrow range of phenomena. The term is sometimes used to refer to an idea about how observable phenomena are related — but the term is also used in other ways within science. Theories are deep explanations that apply to a broad range of phenomena and that may integrate many hypotheses and laws. To learn more about this, visit our page on .

Sadly the Moon is not made of cheese. We know this may come as a blow to some of you, but it’s time you know. The Moon is not a giant sphere of cheddar. It does however have a crust, a mantle and a core just like the Earth. In the past decade it has been discovered that the Moon does have an Earth-like core, meaning it would be solid. The core is rich in iron and is solid, with a radius of approximately 150 miles. Then there is a primarily liquid outer core and it has an estimated radius of 205 miles. The Moon’s core differs from the Earth’s by having a partially molten boundary layer. This layer is estimated to have a radius of 300 miles. How was this research conducted to gather this information? By using state of the art seismological techniques and applying this to the same data taken from the first lunar landings, NASA was able to make these discoveries. People who say that the Apollo seismometer results prove that the Moon is hollow have things exactly the wrong way round; the results show that the Moon is a solid body with a variegated internal structure!

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    Hypothesis Testing is used in the ANALYZE phase of a DMAIC Six Sigma project

  • How to Plan and Write a Testable Hypothesis - wikiHow

    Unfortunately, many textbooks promulgate misconceptions about the nature and process of science

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13.09.2016 · How to Write a Hypothesis

published conclusions with agrain of salt. Even professional researchers can misuse hypothesistests. “Data mining” (first gathering data, then looking forrelationships) is one problem, but not the only one. See().If you find the article heavy going, just scrolldown to read the example in Box 1 and then the corollaries thatfollow.

Data Analytics Tutorial - A Comprehensive Guide - …

Ideally we should not say we are done until we have measured the value of what is being delivered – in other words, gathered data to validate our hypothesis.

Science and Engineering Project Laboratory Notebooks

Examples of how to gather data is performing A/B Testing to test a hypothesis and measure to change in customer behaviour. Alternative testings options can be customer surveys, paper prototypes, user and/or guerilla testing.

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