Sentences with phrase «on the correlation coefficient»

I have to be tentative because it was audio only without the slides, but as far as I can tell, it confuses short term interannual perturbations with long term trends, despite a contrary claim apparently based mainly on correlation coefficients.

Not exact matches

Russ explains why investors should pay more attention to the stock - bond correlation coefficient and understand its impact on...

In a convenience sample of 45 children during a 1 - week training workshop provided by child psychologists and psychiatrists, inter-paediatrician agreement was high, with Pearson correlation coefficients of 0.80 (95 % confidence interval: 0.67, 0.89) for vocabulary, 0.72 (0.54, 0.83) for similarities, 0.80 (0.67, 0.89) for block designs and 0.79 (0.66, 0.88) for matrices.16 Since we previously reported that the intervention resulted in significantly higher verbal IQ scores in intention - to - treat analysis, 16 we focused on results for verbal IQ scores in the present study.

Which is a very interesting question because it's so meaningless and stupid, and yet the fact that identical twins had an 80 percent correlation coefficient on that, even though they'd been separated at birth, I find fascinating.

In order to illustrate how relative similarities of responses in each brain region varied as a function of social distance, inter-subject time series similarities (i.e., Pearson correlation coefficients between preprocessed fMRI response time series) were normalized (i.e., z - scored across dyads for each region) prior to averaging across dyads for each brain region and overlaying results on an inflated model of the cortical surface for each social distance category.

Most colocalization methods are based on pixel overlap between the previously denoised signal that is emitted from two (or more) different fluorescent labels, and use a global image correlation such as Pearson's of Manders» coefficients.

In a subgroup of 1953 study participants who also completed a 24 - hour dietary - recall questionnaire on 2 nonconsecutive days, 33 the Spearman coefficient for the correlation between coffee consumption as assessed with this questionnaire and coffee consumption as assessed with the baseline food - frequency questionnaire was 0.80.

On the upper right are some correlation coefficients between serum cholesterol and disease incidence.

Examples on normal distribution, equation of a line of best fit, Spearman's rank correlation coefficient, and choropleth maps.

An activity designed around a past exam question on Spearmans Rank Correlation Coefficient.

The playlist includes: • 4 links to instructional videos or texts 4 links to practice quizzes or activities • Definitions of key terms, such as correlation coefficient and lurking variable • Visual examples of graphs and how to use them to interpret correlation or causation Accompanying Teaching Notes include: • A review of key terminology • Links to additional practice quizzes or activities on certain parts of the standard, such as causation • Links to video tutorials for students struggling with certain parts of the standard, such as misinterpreting correlation for causation For more teaching and learning resources on related standards, visit Wisewire.com.

In the end, what can be more fairly and appropriately asserted from this research report is that the Marzano model is indeed correlated with value - added estimates, and their correlation coefficients fall right in line with all other correlation coefficients evidenced via other current studies on this topic, again, whereby researchers have correlated multiple observational models with multiple value - added estimates.

She used R (i.e., a free software environment for statistical computing and graphics) to simulate correlation scatterplots (see Figures below) to illustrate three unique situations: (1) a simulation where there are two indicators (e.g., teacher value - added and observational estimates plotted on the x and y axes) that have a correlation of r = 0.28 (the highest correlation coefficient at issue in the aforementioned post); (2) a simulation exploring the impact of negative bias and a moderate correlation on a group of teachers; and (3) another simulation with two indicators that have a non-linear relationship possibly induced or caused by bias.

A rolling - period approach provides insights on how the correlation coefficient evolved over time.

In cases where the correlation coefficient is close to zero, as it is for year - to - year equity market returns, a prediction that relies predominantly on the base rate is likely to outperform predictions derived from other approaches.

Perfectly correlated assets will have a correlation coefficient of one, while the correlation coefficient will be zero when returns on two assets are completely independent.

Now, if the concept of yield spreads is valid, when I do regressions of treasury yields on corporate index yields, I should see tight correlations of the yields versus Treasuries, and beta coefficients near one.

This problem is compounded by optimizers that work at the asset level (e.g., mutual funds), because a mutual fund may change the way it does things quarterly (which instantly negates all of the past return data which the correlation coefficient numbers were based on).

To determine which variables to include in the young adult analysis, we compared the dogs» rankings on the 29 scores (derived from 11 tasks; Table S2) at PA testing with their rankings on these same scores at PS testing by computing Kendall rank correlation coefficients.

In the right panel, the NAO pattern is illustrated based on a reference point of 65 ° N, 30 ° W. Negative correlation coefficients are dashed, and the contour increment is 0.2.

There is no word on whether the authors (or the others they cite) recognized the correlation in time and thus realize that the estimates of the coefficients, especially their confidence limits, will be suboptimal (too certain).

It is clear that there is a strong correlation (correlation coefficient about -0.7) between ECS on the vertical axis and the natural fluctuations on the horizontal axis — an example of an empirical fluctuation - dissipation relation in the models.

If to justify your values you need to use a fourth order polynomial, as is shown on the trend you present, you have to show that there is a significant improvement in the correlation coefficient between the trend and the data by using three additional fitting parameters.

the model does not simulate any dependence of Northern England precipitation on the state of El Niño, with a correlation coefficient of r = 0.01 and no visual indications that extreme events behave differently than the mean.

In the ASD model, automatic predictor selection methods are based on backward stepwise regression and partial correlation coefficients.

I've added a small essay from 2 years ago questioning whether correlation coefficients can be used on averaged data (yearly, monthly, weekly, daily).

We used the higher resolution CALS3k.3 and CALS3k.4 dipole estimates for comparisons using the same filters on the geomagnetic and the radionuclide dipole reconstructions for the past 3 kyrs (Fig. 6), and computed the correlation coefficients among all four records for the time series with low - pass filters between 1/200 and 1/1000 yrs.

On the other hand, the multiple correlation coefficients obtained for solar cycles 22 and 23 are 0.88 and 0.91 respectively.

Now, if we do focus on the rolling 90 - day correlation between Bitcoin and the S&P 500, the correlation coefficient stands at around 4 %.

In order to investigate the impact of specific individual characteristics (gender, age, frequency of computer use) on the «ICT engagement» factors extracted above (F1, F2, F3 and F4), an estimation of correlation coefficients was conducted (see Table 4).

Lead assessors (K.A.C. and A.M.M.) were trained on interview measures by the instrument developers or by an approved trainer, and then trained, supervised, and evaluated for reliability across assessors (κ statistic or intraclass correlation coefficient for all ratings ranged from 0.74 to 1.00).

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).

On the other hand, the correlation coefficient has meaningful between safe attachment style and internal religious attitude.

Research on the PTSC reports a free marginal multirater kappa at.82 and an intraclass correlation coefficient at.95 indicating strong interrater reliability on the instrument.

In the absence of individual participant data, we will seek information on an intraclass correlation coefficient (ICC), which describes the relative variability in outcome within and between clusters (Donner 1980).

For the parent report, convergent and divergent validity were evaluated by calculating Pearson correlation coefficients between behavioral inhibition on the one hand, and symptoms of anxiety, internalizing and externalizing symptoms on the other hand.

Interrater reliability was assessed by computing intraclass correlation coefficients (ICCs) for each component scales of EE on 8 randomly selected interviews.