Sentences with phrase «of a standard deviation»

We find that a one - standard - deviation increase in subject - specific teacher skills raises student performance by 7 percent of a standard deviation in math and 6 percent in reading.

Finally, an increase of one standard deviation in the concentration of private schools nearby is associated with an increase of about 1 percent of a standard deviation in test scores.

The students of third - year teachers score 6 percent and 3 percent of a standard deviation higher in math and reading, respectively, than students of first - year teachers.

We report our results in terms of standard deviations of student test scores.

For the 11 schools with kindergarten readiness gaps of around 30 percentage points, test score gaps range from less than third of a standard deviation to over 1.5 standard deviations.

The magnitude of the effect in reading is greater than one - half of a standard deviation — a large effect by the standards of education policy research.

We see pretty dramatic returns to experience on the order of 15 - 20 percent of a standard deviation on test scores over the first five years.

This graph shows daily sea ice difference from average in units of the standard deviation (based on 1981 - 2010 variation from the average) for this period.

That translates into an increase of almost one - quarter of a standard deviation (23 percent).

Student achievement in their new districts was one - tenth of a standard deviation higher, while the percentages of African - American, Hispanic, and economically disadvantaged students all declined.

The impact of each intervention component is shown in terms of standard deviations on the horizontal axis.

These upper and lower bands are set above and below the moving average by a certain number of standard deviations of price, thus incorporating volatility.

Traditional financial theory has relied heavily on standard deviation or variance (the square of standard deviation) to quantify historic risk.

In reading, the average adverse impact of nonprofit management was roughly 10 percent of a standard deviation annually, about 32 percent of a year's worth of learning.

The normal distribution in the form of a bell - shaped curve shown in Figure 8 - 1 illustrates the concept of standard deviation.

In reading, 17 - year - old boys score 31 percent of a standard deviation below 17 - year - old girls, a deficit equal to about one grade level.

In science and math, meanwhile, girls of that age score 22 percent and 10 percent of a standard deviation lower, respectively, also a difference worthy of concern.

At right, the model diversity, defined a the ratio of the standard deviation of all models from their corresponding mean values.

The author gives initial examples of standard deviation using lifespan and IQ, objectively measurable units.

Are you looking at statistical measure of standard deviation?

It's a couple of standard deviations away from the norm.

Their scores drop by 5 percent of a standard deviation if they have a female teacher.

Moreover, the positive effects were small (about 6 percent of a standard deviation by year three) and limited to one subject.

Among rural students, the benefit is much larger, a 15 percent of a standard deviation gain.

Taking this difference into account cuts the black - white test - score gap to less than a fourth of a standard deviation in math and completely eliminates the gap in reading.

But its usage of standard deviation makes it a natural candidate.

So, for the sake of this article you can think of standard deviation as meaning «risk».

Between - group effect sizes were determined by measuring the difference in magnitude of change between treatment and comparison groups in units of standard deviation.

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

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

If one wants to label a student's level of achievement, maybe we should consider using the number of standard deviations one's performance is from the mean.

Students at high - poverty schools score 11 percent of a standard deviation higher on the cultural consumer scale if they were randomly assigned to tour the museum.

Other statistical measures such as calculation of standard deviation and shape ratios are important to calculate or estimate the risk.

The purpose of this article is to understand the concept of standard deviation and probability and how they relate to risk and making investment decisions.

Both girls and boys scored 7 percent and 8 percent of a standard deviation lower, respectively, than if they had a man.

To wit, the black - white gap in each grade is expressed as a fraction of the standard deviation in test scores observed in the 8th grade.

A one - standard - deviation increase in theater interest is associated with an increase of 37 percent of a standard deviation in tolerance.

For example, the top quarter of elementary - school teachers improve student achievement in math by 33 percent of a standard deviation more than the bottom quarter of teachers do.