Essential Statistics

Irikura, K. K. Essential Statistical Thermodynamics in Computational Thermochemistry, In Irikura, K. K. Erurip, D. J. Eds., 1998. Computational Thermochemistry. American Chemical Society, Washington, DC. 

This list of abbreviations contains both acronyms which are generally used in analytical chemistry and such applied in the book. In addition to terms from analytical methods, essential statistical and chemometrical terms as well as acronyms of institutions and organizations are included. Terms of very particular interest are explained on that spot. 

Its special properties offer the possibility of reducing the so-called correlation noise, caused by a limited correlation time. CC is essentially statistical by nature. The system noise (detector noise) is not correlated with the input PRBS the noise in the correlogram, resulting from the detector noise, is converging to zero with increasing correlation time. 

The Claisen Condensation between esters containing a-hydrogens, promoted by a base such as sodium ethoxide, affords 0-ketoesters. The driving force is the formation of the stabilized anion of the P-keto ester. If two different esters are used, an essentially statistical mixture of all four products is generally obtained, and the preparation does not have high synthetic utility. 

Essential Statistics for the Pharmaceutical Sciences Philip Rowe... 

Essential statistics for the pharmaceutical sciences / Philip Rowe, p. cm. 

The solution is perform new experiments, perhaps on a different instrument, in which the reproducibility is much greater. Table 2.12 is an example of such a dataset, with essential statistics indicated. Now the F-ratio for the lack-of-fit without the intercept becomes 58.409, which is significant at the >99 % level (critical value from Table A.2) whereas the lack-of-fit with the intercept included is less than the experimental error. 

When the polycarbonate of bisphenol A was made interfacially in a non-solvent for the polymer the distribution of molecular weights showed two clear maxima and was unusually broad [40]. This was probably a consequence of the two-step process often employed in the preparation of polycarbonates here, the first step yields low-molecular-weight polymer from phosgene and the aqueous alkaline solution of the aromatic diol, then an accelerator salt and more alkali and phosgene are added in the second step. Polycarbonates prepared in the melt and in solution show the expected essentially statistical distribution of molecular weights [40]. Polycarbonates have also been prepared from bisphenols and bisphenol bischloroformates studies of this reaction in nitrobenzene solution have shown it to be second order [79]. 

---