Means standard error

The Root Mean Standard Error of Prediction (RMSEP) is simply the square root of the MSEP. The RMSEP is sometimes wrongly called the SEP. Fortunately, the difference between the two is usually negligible. 

Table 4.1 Effect of selected thiols, disulphides, amino acids and antioxidants on the time to the onset and the time to reach maximal ischaemic contracture in isolated perfused rat hearts. Hearts were perfused for a control period of 10 min at the end of which global low-flow (10% of control) ischaemia was initiated. The interventions described above were included in the perfusion fluid 5 min prior to the onset and throughout the ischaemic period. The data are shown as means standard errors of the means (n = 6)...

Figure 4.10 Effect of reduced glutathione (GSH) (0-1.0 mM) on Na/K ATPase inhibition associated with the addition of oxidized glutathione (GSSG) (1 me). Experiments were performed using an isolated bovine ventricular Na/K ATPase preparation. Na/K ATPase activity was quantified by the ouabain-sensitive hydrolysis of ATP to yield inorganic phosphate. The data are presented as means standard errors of the means (n = 6).

NOTE Values represent the mean standard error of die mean. 

The experimental design used was nested plots. Main plots had a total area of 100 m2 and were rectangular plots. The criterion used to determine sample size for each stratum was an estimation of AGB of trees with a diameter at breast height (dbh) >10 cm during pre-sampling (90% probability and 20% mean standard error). 

RMSP Root mean standard error of prediction (6.128)... 

The results of PLS- and RBF calibration are compared in Fig. 6.23. It can be seen that the calibration points in case of the RBF net deviate slightly lower than that of PLS. This fact can be expressed quantitatively by means of the RMSP value (root mean standard error of prediction) ... 

Fig. 1 Concentration profiles of (a) BP3, (b) BP1 and (c) 4-MBC concentration during 24 h degradation experiment by T. versicolor at Erlenmeyer scale and at 10 mg/L initial concentration. Treatments (filled circle) uninoculated controls (UNI), (open circle) experimental bottles (EB) and (filled inverted triangle) heat-killed controls (HK). Laccase activity in EB is also plotted in long dashes. Values plotted are means standard error for triplicates. Modified from [44, 49]...

Fig. 14.7 In vitro glucuronidation of SN-38 in human liver microsomes genotyped for UGT1A1 promoter polymorphism. Each bar represents the mean ( standard error) SN-38G production in livers with 6/6 (n = 19), 6/7 (n = 21), and 7/7 (n = 4) genotype Significantly less than 6/6, p<0.05.

For each compound, means standard error (SEM) were calculated and differences were assessed by ANOVA. Calculated p values < 0.05 were considered to be significantly different. The statistical procedures were performed with the software programme Instat Version 3 (Graphpad Software Inc.). 

For composition of diets see Table VI. Mean + standard error,... 

Substitution of the typical variances and covariance into Equation (19) suggests that the for tho MC-ICPMS measurements of Mg in solutions is on the order of +0.010%o. This is regarded as an internal precision for an individual solution measurement. We note, however, that the reported measurements represent averages of several replicate analyses of the same solution and so more realistic assessments of the internal precision for A Mg data presented here would be obtained from the imcertainties in the means (standard errors). For example, four analyses of the same solution yields a standard error for A Mg of +0.005%o (this is stiU regarded as an internal precision because the effects of column chemistry and sample dissolution are not included). No attempt has been made here to review all of the raw data sets to calculate standard errors for each datum in Table 1. However, the distribution of data indicates that +0.010%o Icj is an overestimate of the internal precision of A Mg values and that a more realistic imcertainty is closer to a typical standard error, which in most cases will be < +0.005%o (since the number of replicates is usually >4, e.g., Galy et al. 2001). 

Data obtained from animal experiments were expressed as mean standard error ( SEM). Statistical differences between the treatments and the control were evaluated by ANOVA and Students-Newman-Keuls post-hoc tests, p < 0.05 was considered to be significant ( p < 0.05 p < 0.01 p < 0.001). 

Values represent mean standard error (SE) (nmol g wet tissue) of three rats (Wistar, male, 9 weeks of age, SPF) determind by chiralpak QN-AX n.d. lower than the limit of detection (0.15 nmol g wet tissue) trace below the limit of quantification (0.25 nmol g wet tissue) Vaules in parentheses are those determined by Chiralpak QD-AX. 

Mean Standard error of mean Number cf pairs Standard deviation Significant... 

One question that is often asked of statisticians is in what sense can we be 95% confident that the population mean lies within the limits 3.84 and 4.13 To answer the question we can again conduct a sampling experiment as follows. Suppose that the 40 blood glucose measurements in Figure 8.3 comprised the total population of values. For random sample of size 10 from the populations of blood glucose values determine the sample mean, standard error and the corresponding 95% confidence interval. Repeat the process 100 times. The results of such an experiment are shown in Figure 8.6. 

Walues are means standard error for the number of samples indicated. 

The poded mean standard error in the results was 12.4% (n=3). 100% refers to 20.6 pg aflatoxin B1 produced/g mycelial dry weight... 

FIGURE 5 Total peroxide (circles), catalase-resistant peroxides (squares), and H202 as the difference (triangles) were measured in three lots of oral multivitamins without riboflavin (Tri-Vi-Sol) and three lots of oral multivitamins with 0.6 mg of riboflavin (Poli-Vi-Sol) by time after the initial opening of the bottle. Compared with the preparation without riboflavin, the level of H202 was initially higher (P < 0.01) in (Poli-Vi-Sol), and that level dropped over time (P < 0.05). In both multivitamin preparations, the levels of catalase-resistant and total peroxide rose (P < 0.05) until day 8. Data represent the mean + standard error of the mean. Variations too small relative to the symbol are not shown [30]. 

Gangliosides assayed were eluted from the plate shown in Figure 3, diluted, and the amount derived from 0.1 g of brain was added to the PFC assay cultures. Values are the mean standard error of five cultures. Application of the Student t test to the standard errors for the samples gave p values less than 0.05 when compared with the Thy-l-active fraction. Positive control for the anti-Thy-1.2 PFC assay was a column GM1 fraction containing Thy-l glycolipid (15). 

Data were expressed as the mean standard error of the mean (SEM). Differences between means were determined using one-way analysis of variance (ANOVA) followed by the Tukey-Kramer post hoc comparison and two-sided t test. For comparing percentages, nonparametric tests were also applied (Mann-Whitney, Kruskal-Wallis). Differences were considered significant when p < 0.05. 

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