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Line 1: − + + + + − Many science experiments seek to disprove the null hypothesis as the first step towards proving that a meaningful (alternative) scientific hypothesis is true. Most medical studies, for example, that seek to prove the efficacy of a drug must first rule out the null hypothesis that taking the drug is no better than taking the current best treatment. + − <references/>+ − + − [[Category:Medicine]]+ − [[Category:Science]]
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The '''null hypothesis''' is the [[hypothesis]] that a factor or characteristic of a group is of no consequence. In other words, the null hypothesis is that a factor does not matter. More generally, the null hypothesis is a default position that the tester wishes to [[falsify]] on the basis of the data. The null hypothesis typically holds that something is not present, that there is no effect, or that there is no difference between treatment and control.<ref>[http://statistics.berkeley.edu/~stark/SticiGui/Text/gloss.htm#null_hypothesis Glossary: Null hypothesis]</ref>
<center>{{cquote|''[[Statistical significance|If P is low, reject the H<sub>0</sub>!]]''}}</center>
The '''null hypothesis''' is the [[hypothesis]] that a factor of a group, variable affecting the group, or the differences between two groups is of no consequence. More generally, the null hypothesis is a default position that the tester wishes to [[falsify]] on the basis of the data. The null hypothesis typically holds that something is not present, that there is no effect, or that there is no difference between treatment and control.<ref>[http://statistics.berkeley.edu/~stark/SticiGui/Text/gloss.htm#null_hypothesis Glossary: Null hypothesis]</ref>
Many science experiments seek to disprove the null hypothesis as the first step towards proving that a meaningful, alternative scientific hypothesis is true. Medical studies, for example, that seek to prove the efficacy of a drug must first rule out the null hypothesis that taking the new drug is no better than taking the current best treatment or placebo.
==See also==
==See also==
*[[Occam's razor]]
*[[Occam's razor]]
==References==
==References==
{{reflist}}
[[Category:Statistics]]
[[Category:Probability and Statistics]]