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Limitations in the survey methods include possible sampling bias, question order bias, and internet access.
In three studies including 335 consumers and using fresh fruit as samples, evidence of attribute order bias was established.
The weighted likelihood estimate (WLE), as the estimator proposed by Warm (1989) came to be known, eliminates the first order bias of the MLE (see also Firth 1993).
We thus estimated a small-sample (second order) bias adjustment of AIC (AICc) for each sub model.
Models were ranked using a second order bias correction version of Akaike's Information Criteria for small sample sizes (AICc), where minimum AICc indicated the best model explaining the data.
The Kullback-Leibler distance from the superpopulation was then bias-corrected by subtracting the estimate of the first order bias given by (Ĵ−1)/(2n) where Ĵ is the Chao mean and n is the number of all cells in the given population.
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What they didn't know was that the search engine had been rigged to display the results in an order biased toward one candidate or the other.
26 Sequential order biases may present themselves either as an overall increase or decrease in scores throughout a judging period; or as observable effects of implicit comparisons being made between the previous and current items being judged.
Our proposed second-order bias correction of Finney's [Finney, D.J., 1971.
The method chooses two bandwidths simultaneously, one for each side of the cut-off point by using a criterion based on the estimated asymptotic mean square error taking into account a second-order bias term.
We have determined that this discrepancy is not because of the first-order bias introduced by an increase in the level of background noise or gaps in the data.
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