On the other hand, they omit correlations among blockages, as observed in practical scenarios.
If Central Scotland is removed from the analysis, the correlation weakens (r = 0.43, 95% CI = -0.27 to 0.84), while if the South West is omitted the correlation strengthens (r = 0.83, 95% CI = 0.43 to 0.96).
If the nonconsumers were omitted, the correlation improved (r = 0.17, p = 0.04).
Incoming students were all too keen to assert that it is impossible to reach conclusions without "controlling for" every conceivable confounding factor; omitting correlation almost until the end of the course allowed us to stress the power of randomization to remove the need to do this and hence distinguish causation from correlation alone.
Here we have omitted such correlations, as they were practically absent (0 and 20 gene pairs with correlation below -0.85 in the osmotic shock response and DNA damage datasets, respectively).
The PCA technique was employed in order to omit the correlation between the independent variables in the multivariate regression.
If an omitted variable causes correlation between observations across counties, then the error terms would also demonstrate this correlation.
Another 5 items were omitted because the correlation coefficients of each were under 0.35 [ 31].
If a gene had zero or low expression across all eight samples, it was omitted from the correlation and differential expression analysis.
Omitting these correlations would not cause any bias to the coefficients, though it reduces the efficiency of the estimates.
As a compromise, SNPMStat uses a small number of SNPs to impute untyped SNPs, which may omit additional correlations among SNPs.
