However, these variables would be confounded
by correlation as the habitats favourable to cattle would also be favoured by feral cats (e.g. riparian areas), irrespective of impacts of cattle.
These authors make the completely unsurprising point that that there is a correlation between ENSO indices and global mean temperature — something that has been well known for decades — and then go on to claim that that all trends are explained
by this correlation as well.
Not exact matches
And just
as we frequently mistake
correlation for causation, we're susceptible to what's called the «gambler's fallacy,» the belief that anomalies from expected outcomes in a random process are likely to be evened out
by their opposites in the future — or, more simply, the idea that a roulette ball that's landed eight straight times on black is therefore more likely on the ninth spin to land on red.
Where the bond ETF is negatively correlated to the Composite (one zigs, the other zags), the preferred ETF has a low but positive
correlation (one zigs, the other usually zigs too but not
by as much).
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).
By contrast, when inflation is higher and more volatile —
as it was in the 1970s — the
correlation between stocks and bonds increases.
By now you'll no doubt see the obvious
correlations between them all
as well, and the really interesting thing about it all is that in each and every one of them, both the ones I have reported on here
as well
as others we are yet to review, the lessons we take from them are not to be found in academic institutions.
As illustrated
by the rolling
correlation, an investor operating in real time with inception - to - date data may develop different, dynamic beliefs.
It's not
as though stock markets went up due to above trend growth or productivity and it's hard not to look at a chart of the returns generated
by long - dated gilts and property over the last 30 years and not see some
correlation.
The timing of this
correlation is just
as remarkable
as that for tops,
as demonstrated
by the comments underneath the graph of stock prices in Figure 1.
Correlation risk: «The concept of diversification is the foundation of modern portfolio theory... The financial engineer... reduces the risk of a portfolio by combining anti-correlated assets... All modern portfolio theory does is transfer price risk into hidden short correlation risk... Many popular institutional investment strategies derive excess returns via implicit leveraged short correlation trades with hidden fragility... Correlation risk can be isolated and actively traded via options as source of exce
Correlation risk: «The concept of diversification is the foundation of modern portfolio theory... The financial engineer... reduces the risk of a portfolio
by combining anti-correlated assets... All modern portfolio theory does is transfer price risk into hidden short
correlation risk... Many popular institutional investment strategies derive excess returns via implicit leveraged short correlation trades with hidden fragility... Correlation risk can be isolated and actively traded via options as source of exce
correlation risk... Many popular institutional investment strategies derive excess returns via implicit leveraged short
correlation trades with hidden fragility... Correlation risk can be isolated and actively traded via options as source of exce
correlation trades with hidden fragility...
Correlation risk can be isolated and actively traded via options as source of exce
Correlation risk can be isolated and actively traded via options
as source of excess returns.
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.
That
correlation jumped
by more than 50 %
as the world focused on the turmoil in Asia.
They will then diversify among investments within the assets classes, such
as by selecting stocks from various sectors that tend to have low return
correlation, or
by choosing stocks with different market capitalizations.
The American Search for Peace: Moral Reasoning, Religious Hope, and National Security edited
by George Weigel and John R. Langan Georgetown University Press, 281 pages, $ 30 The «
correlation of forces,»
as the Marxists used to say, has dramatically transformed the international arena in the last few years, and some of these essays may not take that adequately into account.
And even if all rough
correlations could be made smooth
by convoluted arguments about cloud covers and the like, the two Genesis accounts themselves, taken
as chronologies, do not agree.
You should know
by now,
as has been pointed out several times, that supposed
correlation is not causation.
The first 110,000 annual layers of snow in that ice core (GISP2) have been visually counted and corroborated
by two to three different and independent methods
as well
as by correlation with volcanic eruptions and other datable events.
At its beginning, the outcome of the Cold War was
by no means self - evident, given the «
correlation of forces,»
as Marxists used to say.
Others have insisted that their work is social - scientific in the strong sense of the term — that is,
as work guided
by the
correlation of models and data,
as are more purely sociological and social - psychological studies.
It is especially important for Old Testament study because,
as almost every page of the Old Testament testifies, this
correlation was deemed
by Israel herself to be of prime importance!
By «metaphysics in the strict sense,» one properly means metaphysica generalis, or ontology, although from the standpoint of a neoclassical theism there can be no adequate distinction between ontology, on the one hand, and theology and cosmology,
as disciplines of metaphysica specialis, on the other.1 From this standpoint, ontology is also theology in the sense that its constitutive concept «reality
as such» necessarily involves the distinction /
correlation between the one necessarily existing individual and the many contingently existing individuals and events.
Nevertheless, Whitehead is understandably reluctant to endorse the phenomenalist implications of his first version, since it seems to create a schism between the philosophic account of sign interpretation given in terms of
correlations between experiences and the world
as described
by physics and the other sciences.
Unless we are to suppose that there is little or no
correlation between the initial aim and the final form of the subjective aim — a very strange supposition — we must assume vast differences in the initial aims derived from God
by a primitive man and
by an Einstein, or for that matter, between myself
as I drop off to sleep in the evening and
as I write these words.
The historian's detection of the kerygma at the centre of the Gospels found a formal analogy in the contemporary view of historiography
as concerned with underlying meaning, and this
correlation led to the view that the kind of quest of the historical Jesus envisaged
by the nineteenth century not only can not succeed, but is hardly appropriate to the intention of the Gospels and the goal of modern historiography.
Though
correlation doesn't necessarily connote causation, it is interesting to note that 9 of the 10 most religious states in the US,
as revealed
by a 2008 Gallup poll of more than 355,000 adults in the U.S. regarding the importance of religion in their lives, are also on the CDC's list of the 10 fattest states.
By careful «epistemic
correlation,» he seeks to bring these two elements or realms of discourse together
as a basis for belief in God.
As early as 1919 he formulates this position of distance from conventional theories of correlation:»... none of our perplexities as to Nature will be solved by having recourse to the consideration that there is a mind knowing it [Nature
As early
as 1919 he formulates this position of distance from conventional theories of correlation:»... none of our perplexities as to Nature will be solved by having recourse to the consideration that there is a mind knowing it [Nature
as 1919 he formulates this position of distance from conventional theories of
correlation:»... none of our perplexities
as to Nature will be solved by having recourse to the consideration that there is a mind knowing it [Nature
as to Nature will be solved
by having recourse to the consideration that there is a mind knowing it [Nature].
The point on a plane is represented in algebra
by its two coordinates x and y, and the condition satisfied
by any point on the locus is represented
by the corresponding
correlation between x and y. Finally to
correlations expressible in some general algebraic form, such
as ax +
by = c, there correspond loci of some general type, whose geometrical conditions are all of the same form.
«In the Carabao Cup, after winning last season, we lost in the quarter - final but we lost like Manchester United likes to lose — with dignity, with fair play, with participation in the happiness of a giant killer,» he is quoted
as saying
by The Sun, who make a direct
correlation between Mourinho's comments and City.
When the 2000s rolled around and CTE (Chronic Traumatic Encephalopathy) emerged
as a real
correlation with the game of football, the NFL and others followed the noble example of tobacco companies
by falsifying research, denying all charges, and focusing on selling the product to children.
As you can see, there's a direct correlation between decreasing public support and increasing profits as evidenced by the return on investmen
As you can see, there's a direct
correlation between decreasing public support and increasing profits
as evidenced by the return on investmen
as evidenced
by the return on investment.
When you consider that, in essence, the three players who got the most goals, not including Torres, last season (
as well
as the two players who contributed the most assists in Dirk Kuyt, 7, and Raul Meireles, 5) have been replaced
by Stewart Downing (0 goals out of 27 attempts and no assists), Jordan Henderson (1 from 12 and no assists) and Andy Carroll (2 from 28 and no assists) there does seem to be a
correlation to that suggests legitimate reasoning
as to why goals have been difficult to come
by.
What they found was a startlingly strong
correlation between the number of categories of trauma each patient had endured
as a child and the likelihood that he or she had been afflicted
by a variety of medical conditions
as an adult.
Once the data were adjusted for confounding variables such
as family income or disruptions such
as divorce, there was a small but significant
correlation between longer breastfeeding and better conduct scores,
as assessed
by the mothers.
However, the use of the question on consumption of oily fish
as an indicator of maternal DHA status is supported
by the
correlation between the frequency of intake of oily fish with the amount of DHA in the maternal red blood cell membranes (Figure 1).
As we can see, the hypothesis that UKIP vote is driven
by experience of change in the local area can be rejected — in fact Pearson
correlations between UKIP vote and increases in the share of each immigrant group are negative.
In yet another scatterplot analysis of
correlation between gun ownership and murder rate
by country (again, using Wikipedia
as the source), the author find a negative
correlation between gun ownership and rate of homicide.
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.
This doesn't directly answer your question, which is about studies and statistical
correlations, but here is some evidence that at least some of the views of the Republican Party, which a lot of Republican voters hold
as well, can be traced back to positions adopted
by the GOP
as part of the Southern Strategy to appeal to Southern whites using coded racial appeals.
«The process is largely political, with no
correlation between funding and the relative status of districts
as determined
by certain commonly used indicators,» the report found.
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.
By examining the
correlation between humidity and the role of tone in more than 3700 languages, scientists found that tonal languages are remarkably rare in arid regions like Central Europe, whereas languages with complex tone pitches are prevalent in relatively humid regions such
as the tropics, subtropical Asia, and Central Africa.
A few epidemiological studies have even found a small
correlation between SSRI use during pregnancy and ASD, but that can largely be explained
by other factors, such
as the severity of a mother's depression, says Lars Henning Pedersen, at Aarhus University in Denmark, who has no affiliations with any antidepressant manufacturers.
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.
Next, they looked for
correlations between language loss and factors such
as a country's gross domestic product and levels of globalization
as calculated
by an internationally recognized index.
In quantum theory, interactions among particles create fascinating
correlations known
as entanglement that can not be explained
by any means known to the classical world.
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.
When the atoms were classified
by this criterion and then quantified
by their environments, known
as coarse - graining, a clear
correlation emerged between structural order and dynamics.»