Sentences with phrase «much variation exists»

Re: Micajah (# 143), while having a complete cross section does remove the, ahem, «core» problem, it creates another problem — since trees are never perfectly round, where in the cross-section do you sample and how much variation exists in individual trees dependant on this selection?

The question of first and most immediate importance to this survey in the study of school effects is how much variation exists between the achievement of students in one school and those of students in another.

Not exact matches

«While existing theories on why there is so much variation in the ability of different human populations to construct viable states are usually formulated verbally, by contrast, the authors» work leads to sharply defined quantitative predictions, which can be tested empirically,» they added.

The extended clips tend to give us minor additions without much of substance, while the alternate segments also lean toward slight variations on the existing sequences.

Existing research consistently shows large variations in teacher effectiveness, much of which is within schools as opposed to between schools.

The cross-country comparative approach provides a number of unique advantages over national studies: It can exploit institutional variation that does not exist within countries; draw on much larger variation than usually available within any country; reveal whether any result is country - specific or more general; test whether effects are systematically heterogeneous in different settings; circumvent selection issues that plague within - country identification by using system - level aggregated measures; and uncover general - equilibrium effects that often elude studies in a single country.

The large spending gap exists primarily because of the variation in property wealth across the state, which in large part determines how much local revenue can be generated to support public schools.

Interestingly, the specificity and stability of policy activities did not vary much across the 50 states, while significant variations existed in the levels of consistency, authority, and power.

This large gap exists primarily because of the variation in property wealth across the state, which in large part determines how much local revenue can be generated to support public schools.

This paper uses rich new data on New York State teachers to: determine how much variation in the average attributes of teachers exists across schools, identif, schools that have the least - qualified

That such a wide variation (much the same ratio as global temperature extremes 230K — > 320K) exists is a powerful reason not to rely on just a few observations taken over just a few years.

We just question the certainty of how much warming has occurred, whether CO2 is the «thermostat» which overides natural variation in temperature and don't see enough evidence that the Earth is somehow «out of whack» and on the verge of some «tipping point» if such a thing exists at all.

I never saw such a thing, even in IPCC reports, and I doubt very much it exists, simply because of the lack of high quality data (which no one can charge climate scientists for, naturally); but if doesn't exist, you are simply unable to quantify the current variation, at some definite timescale, with respect to the «usual» former variation at the same timescale.