Sentences with phrase «measured by correlation»

Cross-validation skill, measured by correlation between four - month lead prediction and observation of September ice extent, is 0.77.

Cross-validation skill, measured by the correlation between two - month lead predictions and observations of September ice extent, is 0.82, while the RMS error of predictions is 0.72 million square km.

He distinguishes inflation hedging (measured by correlation of returns and inflation) from long - run asset class performance.

Not exact matches

For all the reasons listed above, the correlation between these two factors is actually very weak, as demonstrated by Tim Koller, Jack Murrin, and Thomas E. Copeland in Valuation: Measuring and Managing the Value of Companies (p. 80).

She modifies this strategy to investigate correlation and volatility effects by: (1) measuring also during the selection phase return correlations and sum of volatilities based on daily closing prices for each possible stock pair; (2) allocating each pair to a correlation quintile (ranked fifth) and to a summed volatility quintile; and, (3) randomly selecting 20 twenty pairs out of each of the 25 intersections of correlation and summed volatility quintiles.

Looking back over the past 25 years, a period of low and stable inflation, stock / bond correlation has generally moved in tandem with monetary policy, as measured by the effective federal funds rate.

The experiment, carried out by Ronald Hanson and colleagues, involved entangling spins in diamonds separated by more than a kilometre, then measuring correlations between the spins.

We suspected that the decline in correlation of improvement in economic welfare and growth in market activity had continued, and we thought that using a widely recognized measure, developed by respected economists, would give some authority to the results.

It is no surprise to anyone that there is a strong correlation between how much money is available to a club and the level of success on the pitch; if we measure success by league position or trophies won.

While there is anecdotal evidence that the drugs appear to help some women make more milk, a 2011 report released by the American Academy of Breastfeeding Medicine found no conclusive evidence of «correlation between baseline prolactin levels and rates or milk synthesis or measured volumes of milk production.»

In doing so, we did find a statistically significant positive correlation between performance and voting intention as measured by Public Policy Polling data around the same time.

Point estimates of population parameters (e.g., mean, correlation coefficient, slope) or comparative measures (e.g., mean difference, odds ratio, hazard ratio) should be accompanied by a measure of uncertainty such as a standard error or a confidence interval.

Recently various scientists, notably Harold Koenig at Duke University, have reported finding correlations between religiosity — as reflected by church attendance and other measures — and resistance to depression.

The researchers compared their emotional expressivity results to another demographic measure of immigration — the sheer number of home countries represented by immigrants living in each of 32 countries in 2013 — and found little correlation.

The researchers began by creating large membrane models with embedded and dyed channel proteins; they then put them on a glass surface and measured them using a single - molecule measuring method known as fluorescence correlation spectroscopy.

Other possible factors that might explain or influence the altruistic behavior — such as higher cognition (measured by brain size), hunting in groups, or stronger social bonds between group members — showed either much weaker correlations or no correlation at all with helping behaviors.

Then the team's computer simulations showed that eddies could trigger changes in sea floor currents matching the patterns measured by the instruments, with the best correlation occurring when the effects on deep - sea currents happened 8 days after the eddy passed overhead.

In psychiatric disorders, functional connectivity, which is measured by temporal correlations between some brain regions, is too much increased or decreased compared to healthy control.

The functional connections of the brain network were examined by measuring the correlations between the spontaneous brain signals of the different regions of the brain during rest (Aertsen et al., 1989; Biswal et al., 1995; Salvador et al., 2005; Achard et al., 2006).

However, significant correlations between the FBI - mod and depressive symptoms as measured by the BDI - II were found for bvFTD.

We used the Fisher Z transformation to examine the correlations among adiposity measures and exercise duration by assessing Pearson coefficients.

Kato T, Murashita J, Kamiya A, Shioiri T, Kato N, Inubushi T. Decreased brain intracellular pH measured by 31P - MRS in bipolar disorder: a confirmation in drug - free patients and correlation with white matter hyperintensity.

We resorted to a widely used C. elegans model of Parkinson's disease, where we can measure the correlation between lifespan determined by aging and neuronal loss because the condition is not fatal.

Gene expression profiles measured using human genome Affymetrix Gene Chip arrays were grouped by hierarchical clustering, and correlation coefficients were computed for all pair-wise comparisons (Fig. 4A).

Search for a correlation between the UHECRs measured by the Pierre Auger Observatory and the Telescope Array and the neutrino candidate events from IceCube

In a second step, the resulting clusters, represented by mean profiles, were clustered using average linkage hierarchical clustering with Pearson correlation distance measure, and visualized in a heatmap representation [52].

On the other hand, accumulating evidence points to a bigger correlation between a lack of physical exercise and high body fat, measured by the body - mass - index, and high blood pressure.

Vinogradov & Lukyanov (1986) found a very high correlation between the results posted in a kettlebell lifting competition and a great range of dissimilar tests: strength, measured with the three powerlifts and grip strength; strength endurance, measured with pullups and parallel bar dips; general endurance, determined by a 1000 meter run; work capacity and balance, measured with special tests.

Susan, the first research article seems to make assumptions by entirely indirect measures, a correlation between the amount of phytate consumed and disease state.

Furthermore, the high correlation between measured and reported weight in our validation study could be overestimated if all individuals underreported weight by equal amounts.

We find a positive correlation between a principal's assessment of how effective a teacher is at raising student achievement and that teacher's success in doing so as measured by the value - added approach: 0.32 for reading and 0.36 for math.

The investigators addressed questions such as the correlation between grit and achievement and the relationship between grit and other measures by combining relevant data from all the studies.

For example, a survey of district elementary - school teachers found a strong, negative correlation between teacher morale (as measured by their response to the statement, «I feel I am treated as a valued employee) and the market share of charter elementary schools.

The correlation between teacher effectiveness (as demonstrated by value - added student growth measures) and student life outcomes (higher salaries, advanced degrees, neighborhoods of residence, and retirement savings) is staggering; it's not an exaggeration to say that great teachers substantially improve students» future quality of life and those students» contributions to the common good.

A closer inspection of the data suggested that the reliability of each scale, and in particular the scale measuring growth mindset, was pulled down by lower inter-item correlations among the youngest students completing the survey — those in the third and fourth grades.

The goal is to help researchers look for possible correlations between certain teaching practices and high student achievement, measured by value - added scores.

Moreover, the two premises represent a tautology — student test score growth is the most important measure, and we have to choose other teacher evaluation measures based on their correlation with student test score growth because student test score growth is the most important measure... This point, by the way, has already been made about the Gates study, as well as about seniority - based layoffs and about test - based policies in general.

A recent study by the Measures of Effective Teaching Project found a strong correlation between student survey results and student progress.

The connection is nearly identical to the correlations that prior studies have found between value - added measures and confidential low - stakes evaluations of teachers by their principals.

Correlations of 0.2, such as those above, are consistent with 32 teachers remaining in the same categories under both measures (e.g., performance level A in both cases), 44 teachers switching by one performance level, 18 switching by two levels (e.g., A to C), and 6 teachers switching from the top to the bottom or vice versa.

The Measures of Effective Teaching (MET) study, a much - cited study funded by the Gates Foundation, [2] finds correlations of +0.12 to +0.34 between value - added measures and classroom observation rubrics such as the Danielson FrMeasures of Effective Teaching (MET) study, a much - cited study funded by the Gates Foundation, [2] finds correlations of +0.12 to +0.34 between value - added measures and classroom observation rubrics such as the Danielson Frmeasures and classroom observation rubrics such as the Danielson Framework.

We should remember that there is no correlation between the quality of state standards (as measured by any of three different organizations — Fordham Institute, the American Federation of Teachers and Education Week) and scores on the National Assessment of Educational Progress.

«The lack of meaningful correlation between average teacher compensation and school performance, as measured by the district's 2013 API score, is stunning» said Mark Bucher, president of the California Policy Center.

Some preliminary research by Scott Behrens at Adrian College in Adrian, Michigan, found a significant positive correlation between the habits of mind as measured on his survey and college grade point average (personal communication, April 4, 2005).

However, studies purely measuring the amount of physical activity, PE, or sport participation undertaken by pupils and their academic performance, however measured, do not show a clear and positive correlation.

Gold also lost its correlation to equities, seeing as the SPDR Gold Trust (GLD) is off by 10 % while equities, as measured by the SPDR S&P 500 ETF (SPY), are up 12 %.

She modifies this strategy to investigate correlation and volatility effects by: (1) measuring also during the selection phase return correlations and sum of volatilities based on daily closing prices for each possible stock pair; (2) allocating each pair to a correlation quintile (ranked fifth) and to a summed volatility quintile; and, (3) randomly selecting 20 twenty pairs out of each of the 25 intersections of correlation and summed volatility quintiles.

These non-traditional asset classes tend to have relatively low correlations to the broader stock market as measured by the S&P 500.

The results of our analysis are generally a bit stronger when the aggregate valuation measure is used, but three of eight factors (value blend, momentum, and investment) and two of eight smart beta strategies (Fundamental Index and dividend index) show a stronger correlation when the P / B valuation measure is used.11 The aggregate valuation measure is likely stronger because it captures differences in profitability that can be missed by P / B.

History has shown strong correlations between economic growth, as measured by GDP, and corporate profit growth.