Graphics standards comparison

A graphical comparison of the correlation coefficient (r) and the standard error of estimate (SEE) for a calibration model. 

For a graphical comparison of the correlation [r(Sr)] and the standard deviation of the samples used for calibration (Sr), a value is entered for the SEP (or SEE) for a specified analyte range as indicated through the standard deviation of that range (Sr). The resultant graphic displays the Sr (as the abscissa) versus the r (as the ordinate). From this graphic it can be seen how the correlation coefficient increases with a constant SEP as the standard deviation of the data increases. Thus when comparing correlation results for analytical methods, one must consider carefully the standard deviation of the analyte values for the samples used in order to make a fair comparison. For the example shown, the SEE is set to 0.10, while the correlation is scaled from 0.0 to 1.0 for Sr values from 0.10 to 4.0. 

A graphical comparison of the correlation coefficient (r) versus the standard error of estimate (SEE) is shown in Graphic 59-4. This graphic clearly shows that when the Sr is held constant (Sr = 4) the correlation decreases as the SEE increases. 

Using meta-analytic techniques based on the means and the standard errors presented graphically in the poster, we estimated pooled data of the four effective dosages of quetiapine both for the BPRS and the CGI severity of illness change scores from baseline to endpoint. Quetiapine produced an improvement of 0.43 effect-size units in comparison with placebo, a difference that was highly statistically significant and about the same improvement as haloperidol. Thus, based on the BPRS or PANSS, quetiapine was similar to neuroleptics in efficacy (i.e., differences were nonsignificant). Based on our meta-analysis, quetiapine is clearly superior to... 

CA 40, 2764(1946) (Polaro-graphic detn of azide ion in general and in LA in particular) 5)D.F. Vasil ev, Trudy-KomissiiAnalKhim, OtdelKhimNauk, 2, [5], 90-5(1949) CA 44, 9300-1(1950) (Polarogra-phic detn of Pb content of LA) 6)US Military Specification MIL-L 3055(1949) and Amendment 1 (1952) (Requirements for crystalline LA intended for use in manuf of detonators, fuzes and priming compns) 7)W.H. Rinkenbach A. J.Clear, "Standard Laboratory Procedures for Sensitivity, Brisance and Stability of Explosives , PicArsnTech Rept 1401 (1944), Revised in 1950 8)J. Bernstein, "Determination of Moisture Content of Lead Azide , PicArsnGenLab Rept 51-H1-2331 (1951) (Comparison of closed and open vessel techniques) 9)US Rubber Co, Kankakee Ordnance Works, Joliet,... 

Another useful electroanalytical procedure is the standard addition method successive quantities of a standard solution are added to the unknown solution, the concentration of species in the unknown solution being determined from the intercept of the plot of response vs. quantity added. Note that the use of graphical methods without comparison with theoretical equations and known systems does not prove the accuracy of the experiments, but only their precision. 

Table I shows the Tg values obtained in this work on standard polystyrene samples in most cases, the values obtained from DTA data are slightly higher than those obtained by DSC. Since these data were to be used for detailed comparisons with data obtained by others as well as by ourselves on styrene block copolymers, we first compared our data on anionically polymerized standard polystyrenes with those obtained on other anionically polymerized polystyrenes by other workers also using DTA and DSC techniques. This comparison is shown graphically in Figure 1. In Figure 1, the solid curve is drawn through a combination of our data with that obtained by Wall et al. (25) using a Dupont 900...

This systematic experimental study provided data for the calculation of the free energies of activation (AG p) at standardized conditions from experimental rate constants against which the results obtained by calculation (AG lc) were compared. Two different basis sets have been employed in the DFT calculations the split valence double- (DZ) basis set 6-31G(d) with a triple- (TZ)55,56 valence basis set for manganese (this combination is named basis set I (BS1)) and the triple- basis set 6-311 + G(d,p), which will be denoted basis set II (BS2). The results for transition states and intermediates on the BSl-level of theory are shown in Table 3, a graphical comparison of the free activation energies is shown in Fig. 10. xyz-Coordinates of all geometries are given in the supplementary material of Ref. 57. 

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