Sentences with phrase «of a standard deviation more»

«Extensive research shows that... valid and reliable measures of teacher effectiveness,» have yet to be generated, she says, blithely putting on ignore important work by Thomas Kane, Eric Hanushek, and Raj Chetty and his colleagues, which shows that students learn in any given year somewhere between 10 and 20 percent of a standard deviation more if they have an especially effective teacher rather than a very ineffective one.

Students who attend schools in networks with three schools learn 37 percent of a standard deviation more than students in stand - alone schools.

The results for Spanish language achievement show students in schools in networks with three schools learn 24 percent of a standard deviation more, those in networks of five schools learned 50 percent of a standard deviation more, and those in networks of more than five schools learned 23 percent of a standard deviation more.

At schools under for - profit management, students learned on average 25 percent of a standard deviation more in math each year of the six years of the intervention than they would have had the school been under district management.

Also, nonprofit schools whose contracts were not revoked had an impact on reading performance that was 10 percent of a standard deviation more positive than that of the for - profit schools whose contracts were terminated.

In the elementary grades 3 through 5, students of new Teach for America teachers gained an average of 5.8 percent of a standard deviation more on the TAAS reading exam than did students with other new teachers, a difference that fell just short of statistical significance (see Figure 2).

Not exact matches

According to Blake, his fund has a standard deviation of 8.83 %, barely more than the S&P 500.

These conditions comprise the following: S&P 500 overvalued with the Shiller P / E (the ratio of the S&P 500 to the 10 - year average of inflation - adjusted earnings) greater than 18; overbought with the S&P 500 within 3 % of its upper Bollinger band (2 standard deviations above the 20 - period average) at daily, weekly, and monthly resolutions, more than 7 % above its 52 - week smoothing, and more than 50 % above its 4 - year low; overbullish with the 2 - week average of advisory bullishness (Investors Intelligence) greater than 52 % and bearishness below 28 %; and yields rising with the 10 - year Treasury bond yield higher than 6 - months earlier.

He noted that the daily standard deviation of Bitcoin was ten times that of sterling over the last five years and the average volatility of the top ten cryptocurrencies by market capitalisation was more than 25 times that of the US equities market last year.

One standard deviation in skills confidence meant an approximately 15 % greater chance of being fired for toxic behavior, while employees who were found to be more self - regarding (and less concerned about others» needs) had a 22 % greater likelihood.

I assure you that there are still voters leaving Ohio State off their ballots entirely, including eight voters this week, but you wouldn't think that would be enough for the Bucks to enjoy more than double the standard deviation of the next closest team... until you learn that those eight non-votes are the third - largest group for Ohio State, which is only more frequently ranked No. 2 (13 ballots) and No. 5 (10 ballots).

People may vary on how they define «outlier» depending upon their specific industry — in my work I typically view outliers as things more than 3 standard deviations from the mean (standard in many industries because 99.7 % of data falls within + / - 3 standard deviations)-- but nobody in his right mind calls 1.1 standard deviations an outlier because that would exclude over 25 % of the data.

One of the more commonly used risk measures is standard deviation.

Our daughter was more than 2 standard deviations off of normal in several places on the Q — basically a seriously dysregulated brain.

Using a repeated measures analysis of covariance for those infants with more than one postnatal weight measurement available, the difference between the two groups was similar, ∼ 1.2 standard deviations (P =.005).

And while with more voters the standard deviation becomes larger in absolute terms, it becomes smaller as a percentage of the vote.

More generally, whereas the standard deviation of the share of the vote across divisions for each of the three main parties was 15 percentage points, it was just 8 for UKIP.

«Then, if the flash rate suddenly jumps to at least twice the standard deviation of that running average, there is a high probability the updraft in that cell has strengthened, a supercell is forming and severe weather is more likely with that storm.»

The 17 - billion - solar - mass estimate for the central black hole in NGC 1600 is much more precise, with a range (standard deviation) of 15.5 to 18.5 billion solar masses.

With that kind of power, the measurements will be more exact, and any small deviations from standard model predictions could emerge.

Globally, extremely warm nights that used to come once in 20 years now occur every 10 years.12 And extremely hot summers, those more than three standard deviations above the historic average, are now observed in about 10 % of the global land area, compared to 0.1 - 0.2 % for the period 1951 - 1980.13

All the curves have been centered to have the same mean and standard deviation over the length of record, so as to make them more comparable.

A more detailed summary of a human male would explain that their height has a standard deviation of about three inches, meaning that 95 percent of all men are somewhere between 5» 4» and 6» 4» tall.

A teacher in New York State is considered to be ineffective based on her students» test score growth if her value - added score is more than 1.5 standard deviations below average (i.e., in the bottom seven percent of teachers).

Across all four districts, which together serve more than 465,000 students, the researchers found new elementary teachers were assigned students who had performed.1 to.3 of a standard deviation below their peers who were assigned to teachers with four years of experience or more — meaning that these students were about three to nine months of schooling behind their classmates.

Students also scored nearly 0.20 standard deviations higher on the verbal portion of the ACT, were substantially more likely to pass trigonometry and chemistry classes by 11th grade, and earned higher grade point averages (GPAs) after 9th grade.

For example, states with an Hispanic - population of 14 percentage points (two standard deviations) higher than the average were about 10 percent more likely to pass a charter law.

U.S. students perform significantly worse than students in many developed countries, according to the Program for International Student Assessment (PISA), Trends in International Mathematics and Science Study (TIMSS), and other international comparisons, trailing the leaders by more than half of a standard deviation.

The parents of a student whose performance is 1 standard deviation above the mean are about 8 percentage points more likely to make a request than the parents of an otherwise similar student whose performance is 1 standard deviation below the mean (19 percent vs. 11 percent).

For example, those in the bottom decile (lowest 10 percent) improved by more than half a standard deviation, about a year and one half worth of improvement.

Finally, in Kenya, where the raw test scores showed students in private and public schools performing at similar levels, the fact that private schools served a far more disadvantaged population resulted in a gap of 0.1 standard deviations in English and 0.2 standard deviations in math (after accounting for differences in student characteristics).

On average across all schools, the impact of having a principal 1 standard deviation more effective than the average principal is as much as seven additional months of learning in a single academic year.

These differences are even more pronounced in high - poverty schools, for which the gap between the 25th and 75th percentile principal is more than one - third of a standard deviation.

In reading, the achievement gap has improved slightly more than in math (0.3 standard deviations), but after a half century, the average black student scores at just the 22nd percentile of the white distribution.

The difference is a little more than one - quarter of a standard deviation (26 percent).

For the 20 schools with near - zero kindergarten readiness gaps, test score gaps in grades three and five range from less than two - fifths of a standard deviation to more than a full standard deviation.

Students scored 54 points better in math and 57 in science (on a range with an international average of 500 and an international standard deviation of 100) when they had more than 200 books at home compared with students who had fewer than 10.

[11] The effect of mindset estimated in this study seems promising, especially considering that about 75 percent of students in each grade have room to improve their mindset score by one standard deviation or more.

A change in the historical Catholic population share that produces a 10 - percentage - point increase in the extent of contemporary private school competition generates an improvement of about 5.5 percent of a standard deviation in both science and reading — or more than one - fifth of a grade - level equivalent in these subjects.

After creating graphs and finding the mean, the median, the mode, and the standard deviation for the class, students explore a range of discussion questions about reducing their footprint, their responsibility to subsequent generations, the impact of their consumption, and more.

With a normal distribution of performance (the classic bell curve), a standard deviation is simply a more precise measure of how spread out the distribution is.

Rigorous studies consistently show that the impact of a more - effective teacher is substantial A high - performing teacher, one at the 84th percentile of all teachers, when compared with just an average teacher, produces students whose level of achievement is at least 0.2 standard deviations higher by the end of the school year.

To estimate the importance of basic competency, we identified the share of students performing at least at a very basic level, that is, no more than one standard deviation below the international average of all OECD countries.

More specifically, a one standard deviation increase in credits accumulated led to a 38 percent greater chance of graduating for native students compared to only 20 percent for transfer students.

For instance, in a study published in 1998, Meredith Phillips and her colleagues reported a raw black - white test - score gap of more than one standard deviation in vocabulary using data sets collected between 1980 and 1987.

But once the data are adjusted for the effects of the key background characteristics identified above, black students appear to lose much more ground than they do in the raw averages, falling 0.16 standard deviations in math and 0.19 standard deviations in reading relative to white students (see Figure 1).

If black students in the sample continue to lose ground through 9th grade at the rate experienced in the first two years of school, they will lag behind white students on average by a full standard deviation in raw math and reading scores and by more than two - thirds of a standard deviation in math even after controlling for observable characteristics (the gap would be substantially smaller in reading).

Perhaps more importantly, a nearly identical effect is seen on the math portion of the ACT (taken in the spring of 11th grade), with double - dose algebra raising scores by 0.15 standard deviations on an exam used by many colleges as part of the admissions process.

We found that the positive effects of higher grading standards were restricted to those students who were no more than 0.8 and 0.9 standard deviation below the average score in reading and math, respectively.

Advocates of universal pre-k who wish to ground their position in research better hope the estimates are biased downward because they are very small, e.g., no more than one to three percent of a standard deviation difference between the children in Georgia / Oklahoma vs. other states on fourth grade NAEP achievement scores.