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For data to show significance, the resulting percentage must be less than the chosen level of significance.
The term "significance" links to statistics. A scientist sets forth two hypotheses: the null hypothesis that no change or effect is present, and the alternative hypothesis that a change or effect has occurred. When the data is quantitative, the conclusion is not black-and-white. Probability can push the results one way or the other and the results will vary each time the same exact experiment is carried out.One way is to take the average results of many, many repetitions of the same experiment. Another is to use a statistical test like the chi-squared. The scientist chooses a "good enough" level, the level of significance, say 5% or (if he's very picky and demanding) 1%. The lower the level of significance, the more precision and accuracy is being demanded. For example, picking 100% is ridiculous because while the scientist can be 100% statistically confident, this demonstrates absolutely no precision or accuracy. The test then calculates a percentage from the data. If the percentage is lower than the level of significance, say 2.8% compared to the chosen 5%, this indicates a high certainty and the null hypothesis is rejected. (If the percentage is higher, say 13% compared to the 5%, neither the null nor the alternative can be rejected nor accepted- simply put, no conclusion can be drawn.)
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Indication of a negative result with Bial's Reagent?
A negative result with Bial's reagent will show no color change, indicating the absence of pentoses in the test sample. This can be confirmed by the lack of a green color formation, which is characteristic of a positive result when pentoses are present.
How are experimental data used to show that compound obeys the law of definite proportions?
The Law of Multiple Proportions states that two or more compounds may be made from the same elements but each compound will obey the Law of Definite Proportions. Combining two elements to create another element can only be done with precise measurements of each element or another element would be created instead of the one intended.
When offspring show characteristics of both parent organism it is a result of what type of reprodutrion?
Sexual reproductionSexual Reproduction because it is the joining of the male and female
What does it mean when a trait is recessive?
The principle of excessiveness is defined as the explanation of why one trait will not show over another. If a trait is recessive it will not show when a dominant trait is present.
What is an effect connective?
An effect connective is a word or phrase that indicates a cause-and-effect relationship between two events or ideas in a sentence. Examples include words like "therefore," "thus," "consequently," and "as a result." These connectives help show the result of an action or condition.
Used to show that the result of an experiment is really due to the condition being tested?
A control group is used to show that the result of an experiment is due to the condition being tested by providing a baseline for comparison. This group is not subjected to the experimental treatment, allowing researchers to isolate the effect of the variable being investigated.
Can you give you a sentence using experimental design?
The next car show will have an example of our experimental design.
What is the significance of negative values of voltage and current in the digital VOM?
The significance of negative values of voltage and current in the digital VOM is to show the accurate and full power that a particular device or equipment has in the result.
What is the Significance of the American flag?
The significance of American flag is to show that were the best.
What does leat mean?
It means 'with-you' singular in Irish and Scottish Gaelic.
What is a symbol for spiritual significance?
Answer A HALO is used to show the spiritual significance.
Show to you 10th result?
show the 10th result
What is truthful advertising?
truth full advetisement mean which show true result for people not for advertisement
What was the historical significance of segregation?
the significance of segregation was to show the difference between the people
What does control mean in the meaning of science?
When doing experiments you have to have a control group and an experimental group. The control group is not given a drug (for example), while the experimental group is. This will show (later on) if the drug had a real effect. Sometimes the control group will be given what is called a placebo. This looks just like the drug that the experimental group is given, except it has nothing in it.
What did the results of the experiment show?
The experimental group of rats gained more weight.
What is the significance of tea party?
the significance was to show the redcoats that tea was overpriced and was not needed in Boston.
