Sentences with phrase «sample bias»

This raises a question about the use of convenience sampling and other sampling biases that may impact study findings.

When it comes to personal finance, I see sampling bias most significantly when I see questions related to income.

In order to correct for sample bias in our listing data, we revamped the methodology we use to calculate our estimates.

As research vessels sensibly steer clear of thicker ice that may trap them, there is a clear risk of sampling bias toward thinner ice.

Investigators should be aware of potential sampling bias created by more highly educated participants and managers / professionals choosing to complete online questionnaires.

Effect sizes were calculated using Cohen's d and applying Hedge's g correction for small sample bias.

The only sampling bias is that these writers responded to a thread I started titled: «The Self Published Authors I Want to Hear From.»

But that is the risk we run when we fail to recognize CRSP's sampling bias against the inclusion of truly small stocks prior to 1962.»

This is not to say it doesn't do harm, it does, but so far it seems that the long term harm is pretty minor, and in fact some of the believed harm could very well be due to sample bias since marijuana smokers tend to have other risk factors.

I'm also not sure three examples is sufficient to prove a case, or whether it's just sampling bias.

This representation problem is why compulsory voting exists in these democracies; to avoid sampling bias of only those who are radicalised enough to vote.

In our view, attempting to fully solve sampling bias via post-survey adjustment methods is a step too far and lures the unsuspecting pollster into (further) blase confidence.

The researchers found that some of the evidence for rising dino diversity in the Cretaceous period came from sampling bias; more fossils of different species are available from the period than from earlier periods — a factor that could be due to chance.

Voluntary surveys also tend to exacerbate sampling bias.

Simply calculating the fraction of species in the database that are woody gave misleading results, due to missing data and sampling bias towards economically important or temperate species.

The National Survey of Children's Health, in contrast, is a phone - based survey; the analysis here uses the provided weights to correct for sampling bias due presence of a phone and non-response.

An additional systematic sampling bias in the clear - sky fluxes appears because the clear - sky regions selected by the different algorithms occur in different geographic regions with different cloud properties.

Limitations include the use of prerandomization preparatory sessions, which may reduce generalizability and introduce possible sample bias, and lack of generalizability to other types of trauma or to males.

The Virginia twin - family study of adolescent and behavioral development: Assessing sample biases in demographic correlates of psychopathology

Data from private listing sites, including our own, tends to skew toward luxury apartments, which introduces sample bias when estimates are calculated directly from these listings.

Acknowledging this historical fact, as well as potential sampling bias and possible subjectivity across regions, the safe bet is to focus on trends forming some sort of linear progression, whether upward or downward, or the progression can hit a general plateau, which sometimes happens when the economy shifts from stages in the business cycle.

must be at least partially small sample bias.

``... much, if not all, of the century - long decline reported by Boyce et al. is attributable to this temporal sampling bias and not to a global decrease in phytoplankton biomass.»

There is always a possibility of sample bias in any study, but Mintel is better than most about keeping it in check.

The research instrument proactively corrected for sample bias, ultimately concluding that the original skew did not materially impact findings.

Sample bias is a statistical concept that refers to a situation in which some segments of the population are less likely to be included in sample data collection.

An overview of our new methodology can be found here, but today, we want to dig a bit deeper into one of the primary issues that we're aiming to correct: sample bias.

, but today, we want to dig a bit deeper into one of the primary issues that we're aiming to correct: sample bias.

Our approach corrects for the sample bias inherent in other private sources, producing results that are much closer to statistics published by the Census Bureau and HUD.

These better implemented studies showed that marijuana use did not have a significant effect on later harder drug use (in fact, I've always been shocked how little a correlation there was, since there is still a sampling bias here that should find a mild correlation to harder drug use, I'm really shocked there wasn't really found to be any correlation).

Many researchers consider the book flawed because of its sampling bias: Most of the men interviewed were young, white, and eager to participate.

By applying statistical tricks to account for sampling bias, the researchers were able to determine that between 45 — 48 %, or just under half, of the world's plants are woody.»

Swallowed by patients, the gelatin capsule dissolves and the sponge expands, such that when it's pulled back out, it comprehensively samples cells from the whole oesophagus, entirely removing the risk of sampling bias.

Among them are that it is not collected in the same way from state to state; misses center - based programs that fall outside the licensed provider network; does not incorporate corrections for sample bias; and, most critically, does not incorporate information from individual families on their daycare and preschool expenses.

Sample bias.

Mr. Wahal concludes that the profitability premium is similar in magnitude to the post 1963 period, which further strengthens the argument for the existence of the profitability premium by demonstrating that the research is not subject to sampling bias.