The result of this survey may reflect a bias in the sampling method: The data was gleaned during a webinar on Sarbanes-Oxley, so perhaps reflects a sample that is unusually interested in corporate social responsibility.
BrandIndex calculated it's score by asking Netflix, Redbox, DirecTV and Blockbuster customers about their impressions of each brand, and what they've heard about the brand via word of mouth, advertising, etc. BrandIndex Global Managing Director Ted Marzili told me that the scores reflect a sample size of about 15,000 respondents.
This can be achieved by assuming that each individual asymmetry value reflects a sample from a normal distribution with zero mean and variance σFA [i], the latter representing the individual-specific degree of DI [ 10].
Significant deviations were found to be scattered across 11 of the 15 loci, indicating results reflected a sample level phenomenon (such as the Wahlund effect) and not problems with individual loci.
However, the current findings may reflect a sample bias: mental health services such as headspace may be capturing those NEETs who are experiencing depressive symptoms rather than those NEET who are not.
The GWAS data showed slightly higher effect size (OR) than the replication study (Tables 1 and 2), which may have reflected a sample selection bias since 74% of the patients are positive for renal nephritis for the GWAS samples, comparing with only 47% in the overall (replication) samples (included the SLE samples in the GWAS).
Finally, the uneven representation of the different core structures reflects a sampling bias that is typical of the data sets used to build QSARs.
To ensure that the lack of overlap between samples did not reflect a sampling artifact and to circumvent the frequent nonsense sequences obtained using the TasI enzymes, TaiI enzymes were used.
One might argue that higher levels of autocorrelation in observed compared to simulated data reflected a sampling artefact due to the accumulation of many small samples over a long period [34].
While this observation could be due to extrasynaptic glutamate receptors being more sensitive to caffeine, we feel it more likely reflects a sampling bias caused by selecting mEPSCs based on an amplitude threshold.
