Reducing the standard deviation in multiple-assay experiments where the variation matters but the absolute value does not.
When the value of a quantity x for a number of systems (cells, molecules, people, chunks of metal, DNA vectors, so on) is measured and the aim is to replicate the whole set again for different trials or assays, despite the efforts for a near-equal design, scientists might often obtain quite differen...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2013-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3813515?pdf=render |
| _version_ | 1818515764244643840 |
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| author | Pablo Echenique-Robba María Alejandra Nelo-Bazán José A Carrodeguas |
| author_facet | Pablo Echenique-Robba María Alejandra Nelo-Bazán José A Carrodeguas |
| author_sort | Pablo Echenique-Robba |
| collection | DOAJ |
| description | When the value of a quantity x for a number of systems (cells, molecules, people, chunks of metal, DNA vectors, so on) is measured and the aim is to replicate the whole set again for different trials or assays, despite the efforts for a near-equal design, scientists might often obtain quite different measurements. As a consequence, some systems' averages present standard deviations that are too large to render statistically significant results. This work presents a novel correction method of a very low mathematical and numerical complexity that can reduce the standard deviation of such results and increase their statistical significance. Two conditions are to be met: the inter-system variations of x matter while its absolute value does not, and a similar tendency in the values of x must be present in the different assays (or in other words, the results corresponding to different assays must present a high linear correlation). We demonstrate the improvements this method offers with a cell biology experiment, but it can definitely be applied to any problem that conforms to the described structure and requirements and in any quantitative scientific field that deals with data subject to uncertainty. |
| first_indexed | 2024-12-11T00:33:08Z |
| format | Article |
| id | doaj.art-4052454a54b545369a0833e2893773e9 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-11T00:33:08Z |
| publishDate | 2013-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-4052454a54b545369a0833e2893773e92022-12-22T01:27:15ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-01810e7820510.1371/journal.pone.0078205Reducing the standard deviation in multiple-assay experiments where the variation matters but the absolute value does not.Pablo Echenique-RobbaMaría Alejandra Nelo-BazánJosé A CarrodeguasWhen the value of a quantity x for a number of systems (cells, molecules, people, chunks of metal, DNA vectors, so on) is measured and the aim is to replicate the whole set again for different trials or assays, despite the efforts for a near-equal design, scientists might often obtain quite different measurements. As a consequence, some systems' averages present standard deviations that are too large to render statistically significant results. This work presents a novel correction method of a very low mathematical and numerical complexity that can reduce the standard deviation of such results and increase their statistical significance. Two conditions are to be met: the inter-system variations of x matter while its absolute value does not, and a similar tendency in the values of x must be present in the different assays (or in other words, the results corresponding to different assays must present a high linear correlation). We demonstrate the improvements this method offers with a cell biology experiment, but it can definitely be applied to any problem that conforms to the described structure and requirements and in any quantitative scientific field that deals with data subject to uncertainty.http://europepmc.org/articles/PMC3813515?pdf=render |
| spellingShingle | Pablo Echenique-Robba María Alejandra Nelo-Bazán José A Carrodeguas Reducing the standard deviation in multiple-assay experiments where the variation matters but the absolute value does not. PLoS ONE |
| title | Reducing the standard deviation in multiple-assay experiments where the variation matters but the absolute value does not. |
| title_full | Reducing the standard deviation in multiple-assay experiments where the variation matters but the absolute value does not. |
| title_fullStr | Reducing the standard deviation in multiple-assay experiments where the variation matters but the absolute value does not. |
| title_full_unstemmed | Reducing the standard deviation in multiple-assay experiments where the variation matters but the absolute value does not. |
| title_short | Reducing the standard deviation in multiple-assay experiments where the variation matters but the absolute value does not. |
| title_sort | reducing the standard deviation in multiple assay experiments where the variation matters but the absolute value does not |
| url | http://europepmc.org/articles/PMC3813515?pdf=render |
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