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SKR ☆ 2008-03-11 13:26 (6267 d 09:24 ago) Posting: # 1679 Views: 5,420 |
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Dear Members, Here am keeping my doubt in front of you. In ANOVA procedure the GLM output gives P-values up to four digit number after decimal point (Ex: 0.6562). As we have to test at 5% LoS, i.e 0.05, is the output value has to be rounded off to two digit number after decimal before testing? For Ex. if ANOVA P-value is 0.0518, without rounding off, it is greater than 0.05. Hence Conclusion: Insignificant. With rounding off to two digit number (0.05), It is equal to 0.05, Hence Conclusion: Significant. Which one is right. Please clarify.. -- Edit: Category changed. [Helmut] |
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Helmut ★★★   Vienna, Austria, 2008-03-11 14:07 (6267 d 08:43 ago) @ SKR Posting: # 1680 Views: 4,560 |
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Dear SKR! ❝ In ANOVA procedure the GLM output gives P-values up to four digit number ❝ after decimal point (Ex: 0.6562). Being not a SAS-user myself - but it should be possible even for this valuable piece of software to come up with more decimal places (keyword: ODS) . Maybe it's possible to configure it to come up with more significant digits (even better in scientific notation)... ❝ As we have to test at 5% LoS, i.e 0.05, is the output value has ❝ to be rounded off to two digit number after decimal before testing? No rounding should be applied! ❝ For Ex. if ANOVA P-value is 0.0518, without rounding off, it is greater ❝ than 0.05. Hence Conclusion: Insignificant. ❝ With rounding off to two digit number (0.05), It is equal to 0.05, Hence ❝ Conclusion: Significant. Which one is right. That's easy: 0.0518 > 0.05; the output should be modified in such a way that the conclusion (n.s.) is transparent to a reviewer of the printout. — Dif-tor heh smusma 🖖🏼 Довге життя Україна! ![[image]](https://static.bebac.at/pics/Blue_and_yellow_ribbon_UA.png) Helmut Schütz ![[image]](https://static.bebac.at/img/CC by.png) The quality of responses received is directly proportional to the quality of the question asked. 🚮 Science Quotes |
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SKR ☆ 2008-03-14 13:04 (6264 d 09:46 ago) @ Helmut Posting: # 1693 Views: 4,266 |
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Ing. Helmut Schütz