Sentences with phrase «by averaging correlation»

Regional correlations were obtained by averaging correlation coefficients which exhibit p - values less than 0.05, for land, ocean, and total field domains.

In particular, we generated an average network by averaging the correlation matrices from all the subjects (n = 194).

This was done by averaging the correlation matrices from all the subjects, element by element.

An average network, which is produced by averaging correlation matrices across subjects, does not properly represent the characteristics of the individual networks [26].

Not exact matches

The Company's mission is to preserve and grow capital by producing above - average absolute returns with low correlation to traditional assets and manageable risk.

S&P 500 Correlations: This interesting graph shows the change in average stock correlations, shared by Tiho Brkan of the AtlCorrelations: This interesting graph shows the change in average stock correlations, shared by Tiho Brkan of the Atlcorrelations, shared by Tiho Brkan of the Atlas Investor.

In fact, several functional brain network studies have generated a group network by simply averaging the correlation coefficients between the same set of nodes across subjects [10], [12], [13].

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].

The correlation between ratings by principals and the average test scores of a teacher's students is significantly higher than the correlation between ratings by principals and the teacher's value - added rating in reading (0.56 versus 0.32), though not in math.

When they calculate the simple correlation between income and math achievement, Helen Ladd's approach, they find that a $ 4,000 increment (a 50 percent increase in the $ 8,000 average income reported by the families in this study) in the income of the poor family will lift student achievement by 20 percent of a standard deviation (close to a year's worth of learning in the middle years of schooling), a substantial impact that seems to support the Broader, Bolder claims.

A review of research by Duke University Professor Harris Cooper found that for elementary school students, «the average correlation between time spent on homework and achievement... hovered around zero.»

[xi] At the institution level (weighted by enrollment), the correlation between average SAT / ACT scores and the mobility rates of low - income students is 0.65 for public and private, non-profit institutions combined (0.58 for publics and 0.71 for privates).

«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).

Recognition of chart patterns and bar (or later candlestick) analysis were the most common forms of analysis, followed by regression analysis, moving averages, and price correlations.

By 2013, the Fed started to taper and the correlation fell back to zero, and stayed below its average of 0.26 until Aug., 2015, precisely when VIX backwardation appeared.

As average returns across funds tend to smooth out performance volatility due to the imperfect correlation between these funds, we also charted the performance statistics for quintile portfolios by return for the 36 funds that had full performance data for our analysis period.

I was somewhat surprised by the strong correlation between CET and global or NH MST when calculated from 10 y averages (the same for GMST and NHMST), but now I realized that the reason was fully in the dominance of AGW in that calculation.

In addition, the correlation between different soil layers can be amplified by the smoothing effect of monthly averaging.

As you know, on average CO2 lags temperature change by about 800 years (it varies depending on who does it, the correlation is rather broad and flat, so the number is pretty squirrelly), it is untrue to suggest that natural fluctuations in CO2 always follow temperature fluctuations.

5 4.4.6 Global temperatures and climate patterns are influenced by concentrations of greenhouse gases 4.4.7 There is a correlation between rising CO2 levels and average global temperature.

Within the paleoclimate context, where the expectation is that each proxy is weakly correlated to the northern hemisphere mean (for two reasons: proxies generally have a weak correlation with local climate, which in turn is weakly correlated with a hemispheric average) the LASSO as used by MW2010 is simply not an appropriate tool.

On a year - to - year basis there is absolutely no correlation between human CO2 emissions and atmospheric CO2 levels: the amount of human CO2 «staying» in the atmosphere swings between 15 and 88 percent of that emitted by humans, with a multi-year average of just under 50 %.

Knutti et al. (2010a) investigated the behaviour of the state - of - the - art climate model ensemble created by the World Climate Research Programme's Coupled Model Intercomparison Project Phase 3 (CMIP3, Meehl et al. 2007), and found that the truth centred paradigm is incompatible with the CMIP3 ensemble: the ensemble mean does not converge to observations as the number of ensemble members increases, and the pairwise correlation of model errors (the differences between model and observation) between two ensemble members does not average to zero (Knutti et al. 2010a; Annan and Hargreaves 2010; hereafter AH10).

The exact speed with which these are going to contribute to sea level rise is highly uncertain, the synthesis report says, but the best scientific estimate — based on observed correlation between global average temperatures and sea level rise over the past 120 years — shows that by 2100 we will experience sea level rise of one meter or more.

Population average models were used to account for the longitudinal study design and correlation of repeated measurements, and an interaction term between maternal education (our socioeconomic measure) and age was included in order to examine whether differences in health inequalities by age were statistically significant.

We inflated this sample size by a design effect of 1.18 to 210 infants per trial arm to allow for correlation between responses within the same cluster (that is, maternal and child health centre), 28 assuming an average cluster size of seven (the number of eligible mothers attending each centre) and an intracluster correlation coefficient of 0.03.

The findings of the survey revealed that the reliability of the two short versions of the questionnaire as measured by the method of the internal consistency and the average inter item correlation analysis is appropriate.