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What do you mean by the term statistically valid?
The term statistically valid means a study is able to draw conclusions that are in agreement with statistical and scientific laws. This relies on mathematical and statistical laws.
What is a hypothesis that has been tested over and over again?
A scientific theory is a hypothesis that has been repeatedly tested and still seems to be valid. These theories are tested by using the scientific method.
What is bias in a scientific investigation?
Bias in a scientific investigation usually comes in the form of wanting a particular result. This can skew with the process, doing things that an objective experiment would never do, such as only choose certain results as valid.
What is the difference between a valid or invalid argument?
An invalid argument is when the facts you are using are invalid or your forms of defense are wrong or incorrect, a valid argument is the opposite of an invalid argument. "There is a windmill in my beard. your argument is invalid." (This is a good example of a bad contradiction)
Who do you explain how rational exponents relate to radical notation?
Defining powers this way makes the laws of powers continue being valid, for fractional exponents. Mainly, as you might know, (ab)c = abc. For positive integers "b" and "c", this is easy to visualize. Now, for example, for (21/2)2, you would expect the result to be 2 according to this law. This is only possible if 21/2 is equal to the square root of 2.
