Over at Data Colada, Uri Simonsohn argues that The Funnel Plot is Invalid.
Funnel plots are a form of scatter diagram which are widely used to visualize possible publication bias in the context of a meta-analysis. In a funnel plot, each data point represents one of the studies in the meta-analysis. The x-axis shows the effect size reported by the study, while the y-axis represents the standard error of the effect size, which is usually inversely related to the sample size.
In theory, the points ...read more
Today is World TB Day, commemorating Dr. Robert Koch’s groundbreaking 1882 discovery of the organism that causes tuberculosis. At the announcement of his research to the public, he declared, “If the importance of a disease for mankind is measured by the number of fatalities it causes, then tuberculosis must be considered much more important than those most feared infectious diseases, plague, cholera and the like.” Thirteen years later he would be awarded the Noble Prize for his ...read more
Models of the six nanoscale “vehicles” that will be competing this April. (Credit: CNRS)
Four racing teams from around the world will gather in France this spring to compete for a first-of-its-kind title.
Their vehicles will “inch” to the starting line and explode into motion to kick off a marathon 36-hour race that will have covered less than the width of a human hair by the time a victor is crowned. The vehicles participating in the race are custom-built tuners assemb ...read more
Some Google Street View cars have been specially equipped with methane analyzers to detect methane lakes from natural gas lines. (Credit: Environmental Defense Fund)
Natural gas pipeline leaks that pose a safety hazard are quickly addressed. But what about leaks too small to pose a threat? These mall leaks are often overlooked and they collectively release tons of methane, a greenhouse gas 84 times more potent than carbon dioxide.
However, thanks to researchers from Colorado State University, ...read more
“We don’t like strangers in these parts.” Credit: 20th Century Fox
The X-Men films have consistently shown their mutant superheroes as powerful but misunderstood outcasts living in the shadows. One of the loneliest and angriest of them all has been Wolverine: the seemingly ageless mutant played by Hugh Jackman whose superhuman healing powers and retractable metal claws enable him to literally tear through squads of gun-toting enemies. But the third and last film of ...read more
Author Vishay SinghPosted on Categories Discover Magazine
