On the other hand, the fund's
size coefficient is significantly negative.
The value coefficient is higher now, too, but
the size coefficient is still unexpectedly large.
(Remember, in the three value funds we considered above,
the size coefficients were negative.)
And as we saw in my previous post, it is: the value and
size coefficients for XIC are negligible.
Not exact matches
I expected that the stock funds, which were varied in
size and geography, to have lower correlation
coefficients.
The
size of the
coefficient made it possible to determine the importance of one attribute relative to another.
Their sample
sizes have been adjusted using the methods described in the Handbook and by Donner 2000 incorporating an estimate of the intracluster correlation
coefficient (ICC) derived from the trial (if possible).
While trapped, the molecule's residual movement can be precisely analyzed to yield
size and charge sensitive motion parameters in real time (specifically, diffusion
coefficient and mobility).
Formally, small - world networks show a ratio γ defined as C / Crandom of ≫ 1 and a ratio λ defined as L / Lrandom of ∼ 1, with Crandom and Lrandom the clustering
coefficient and characteristic path length of a random organized network of similar
size (Watts and Strogatz, 1998; Sporns et al., 2004).
We show that in fact, so long as the disease is sufficiently polygenic, the selection
coefficients of individual loci are insensitive to the fitness cost of the disease, and instead depend on the distribution of effect
sizes and the degree of mutational bias toward increased disease liability.
In this analysis, we adjust spending figures to reflect differences in district
size and in the costs of providing education before calculating the
coefficient of variation.
It also helps that the Discovery's frontal area is reduced and the aerodynamic drag
coefficient is just 0.33, which is impressively low for a full -
size SUV.
We then factor in your dog's breed composition, information at certain genes that affect
size, and their inbreeding
coefficient to calculate genetic age.
A 2005 German study of 42,855 litters of «normally
sized» (presumably standard) dachshunds found a correlation with the
coefficient of inbreeding and the incidence of inbreeding depression in dachshunds.
Higher
coefficients will be associated with a diminishing vitality in the dog, smaller litter
size, and shorter lifespan (i.e. inbreeding depression).
Conceptually, one would allow the
coefficients of the expansion to vary month by month or year by year, except for the station shifts which are the same every year; but that really would blow the
size of the problem out of control.
We shouldn't forget that the Energy Performance
Coefficient, or EPC, in Deap calculations is based on a building of equal
size to the one in question, albeit using standard reference performance values.
When estimating a multiple regression, the effective sample
size for each
coefficient can be different.
In the question and answer session in a seminar someone saying, «But, Dr Kaplansky, with a sample
size of 27, the correlation
coefficient you have arrived at is less than experimental error» wouild result in a collective gasp and «ole!»
This reduction in sample
size decreases the accuracy of the estimated regression
coefficients and causes the standard error to be underestimated during the calibration period.
For instance, «the vehicle now has a
coefficient of drag that is 30 % lower than the original concept,» and the battery itself had to be designed in a T - shape in order to increase its
size without compromising aerodynamics.
If both air and molasses are described by the viscous NS equations, the only difference is in the
size of the dissipation
coefficient.
One only need look at the changes in the hyperviscosity
coefficients in the manuscript (Table 1) to see that the hyperviscosity (unphysical) is reduced as the mesh
size is reduced.
3: You're looking for «significant
coefficients of the same approximate
size and sign», whereas the proper test would be to check that no more than 5 % of the simulated
coefficients exceed the (absolute) magnitude of the observed
coefficients.
Assuming a drop - out rate from the trial of approximately 20 %; this sample
size was sufficient to detect a standardised effect
size of 0.4 at 85 % power and α of 0.05 in the primary outcome measure if there was no clustering and a standardised effect
size of 0.6 allowing for clustering by course with an intraclass correlation
coefficient of 0.178 or less; for this sample
size calculation, we conservatively imagined clustering within control families as well as intervention families.
Many of the scales demonstrated weak psychometrics in at least one of the following ways: (a) lack of psychometric data [i.e., reliability and / or validity; e.g., HFQ, MASC, PBS, Social Adjustment Scale - Self - Report (SAS - SR) and all perceived self - esteem and self - concept scales], (b) items that fall on more than one subscale (e.g., CBCL - 1991 version), (c) low alpha
coefficients (e.g., below.60) for some subscales, which calls into question the utility of using these subscales in research and clinical work (e.g., HFQ, MMPI - A, CBCL - 1991 version, BASC, PSPCSAYC), (d) high correlations between subscales (e.g., PANAS - C), (e) lack of clarity regarding clinically - relevant cut - off scores, yielding high false positive and false negative rates (e.g., CES - D, CDI) and an inability to distinguish between minor (i.e., subclinical) and major (i.e., clinical) «cases» of a disorder (e.g., depression; CDI, BDI), (f) lack of correspondence between items and DSM criteria (e.g., CBCL - 1991 version, CDI, BDI, CES - D, (g) a factor structure that lacks clarity across studies (e.g., PSPCSAYC, CASI; although the factor structure is often difficult to assess in studies of pediatric populations, given the small sample
sizes), (h) low inter-rater reliability for interview and observational methods (e.g., CGAS), (i) low correlations between respondents such as child, parent, teacher [e.g., BASC, PSPCSAYC, CSI, FSSC - R, SCARED, Connors Ratings Scales - Revised (CRS - R)-RSB-, (j) the inclusion of somatic or physical symptom items on mental health subscales (e.g., CBCL), which is a problem when conducting studies of children with pediatric physical conditions because physical symptoms may be a feature of the condition rather than an indicator of a mental health problem, (k) high correlations with measures of social desirability, which is particularly problematic for the self - related rating scales and for child - report scales more generally, and (l) content validity problems (e.g., the RCMAS is a measure of anxiety, but contains items that tap mood, attention, peer interactions, and impulsivity).
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 standardized (z - transformed) regression
coefficients, βs, were taken as within - conditions (or within - groups) effect -
size estimates, and the differences between the unstandardized regression
coefficients, bs, were tested according to Cohen [29]: z = (b1 − b2) / -LSB-(SE12 + SE22) 1/2].
Overall stimulant effect
sizes for overt aggression were negatively correlated with the prevalence of conduct disorder (correlation
coefficient [r] = — 0.508, p < 0.05), or oppositional defiant disorder (r = — 0.613, p < 0.05).
To estimate effect
sizes, Cohen d was computed by dividing the unstandardized
coefficients for intervention effects (accounting for level 1 and level 2 covariates) by the within - group standard deviation.40, 41 Estimates of within - group standard deviation were computed using the raw data for waking cortisol level (to examine the intervention effect on the intercept) and raw data for waking to bedtime change in cortisol level (to examine the intervention effect on the slope).
Pearson's product — moment correlation
coefficient was used to address research question 3, which addressed the
size of the association between CD / ODD symptoms and level of insecurity.
Path
coefficients ranged from.23 to.51, reflecting small to medium effect
sizes.
Path
coefficients ranged from -.21 to.26, reflecting small effect
sizes.
First, the amount of explained variance in this study was small to moderate, with standardized beta
coefficients for significant parenting effects ranging in
size from.13 to.24.
According to Cohen's rules of thumb [38], a correlation
coefficient of 0.10 corresponds to a small effect
size.
Effect
size estimates (raw regression
coefficients or odds ratios) and their variability (standard error or 95 % confidence interval) are reported for each parameter retained in the final models.