What is selection bias?
Selection bias meaning is the term used to describe the situation in which a subset of data (examples) is performed to make population-related inferences.
However, the resulting result will probably be wrong, or rather wrong because it is wrong. Because the sample data group does not create the entire data group.
It doesn’t work? Selection Bias Reliability
Actually, it works. It reminds us to collect the data correctly (that is, really random and as much as possible).
How can digital agencies, product designers, and user researchers benefit from this?
Selection bias is a good term for reminding ourselves not what data is, but what it is.
For example, when analyzing an Instagram user who says, “I’m not interested in showing this ad,” some of the ads that appear to you on Instagram, “he says, ” Hmm. So, it attracts the attention they don’t mark.”
Because limited data is only about what they mark. We have no data on the advertisement they don’t mark. The above data is limited. It does not give any information about whether or not it sees the advertisement it does not mark, or whether it likes it or not.
Selection Bias In Healthcare Industry
The common purpose of all research in the field of health is to find the “truth”. Regardless of the original purpose (s), the results obtained from a section of the society and an estimate of that group or community and the confidence interval of this estimate are tried to be determined. Regardless of the purpose of the study or the size of “society”;
The “observed” result in any epidemiological study, or “value” determined, is the sum of the three factors: 1) “real”, 2) random (random) error and 3) systematic error (bias-sides retention and confounding factors). To say that the result we get is “real”. But it is possible to argue that this is not a “mistake”. In this paper, which is ready in print in two parts, summarizes what is familiar with systematic errors. In this first part of the paper, the types of errors that may be encountered in the researches in the field of health are explained; Such side holding (bias) types and characteristics are debutants under the heading of error sources for selective party retention and information aggregation/classification.