Sentences with phrase «observational bias»

That plot shows a progressive rise in tornado rates, but it has no correction for observational bias.

Progress in the longer term depends on identifying and correcting model biases, accumulating as complete a set of historic observations as possible, and developing improved methods of detection and correction of observational biases.»

At the time, we reported that this would certainly be taken into account in revisions of data set as more data was processed and better classifications of the various observational biases occurred.

However, researchers found that observational bias also exists, as akin to value - added bias, whereas teachers who are non-randomly assigned students who enter their classrooms with higher levels of prior achievement tend to get higher observational scores than teachers non-randomly assigned students entering their classrooms with lower levels of prior achievement.

Another possibility is that they have seen only a fraction of all the satellites associated with the Milky Way due to various observational biases.

We estimate that ~ 35 % of KOIs are false positives due to contamination, when performing a first - order correction for observational bias.

This also gave a better picture of the total weekly usage, as such data was not subject to any observational bias.

Now, however, two astronomers from the Complutense University of Madrid have applied a new technique, less exposed to observational bias, to study a special type of trans - Neptunian objects: the extreme ones (ETNOs, located at average distances greater than 150 AU and that never cross Neptune's orbit).

But that's partly because of observational bias, notes Philippe Thebault.

Most known stellar systems have at least one planet, but Méndez says this might be an observational bias as planets are hard to detect.

Also, the spectra did not show any signs of binarity or artefacts, so although these three superflare stars with low S index are hard to explain with any of the proposed scenarios, we do not find any observational bias that can remove them from the sample population.

The most accepted theory establishes that the orbits of these objects, which travel beyond Neptune, should be distributed randomly, and by an observational bias, their paths must fulfil a series of characteristics: have a semi-major axis with a value close to 150 AU (astronomical units or times the distance between the Earth and the Sun), an inclination of almost 0 ° and an argument or angle of perihelion (closest point of the orbit to our Sun) also close to 0 ° or 180 °.

They did not want any one method to dominate the analysis they were doing to ensure they did not retain any of the observational biases they were trying to overcome.

EJN state that «the observational bias is smallest for the strong storms considered here».