Articles tagged with Statistical Analysis
According to Dr. Rochelle Tractenberg, a statistical crisis is emerging due to improper analysis and interpretation of data, leading to irreproducible results. She advocates for responsible conduct in research and the importance of treating data ethically.
Researchers uncover link between vortices and statistical properties of hydrodynamic fluctuations, enabling prediction of pollutant advection and mixing. The study provides valuable insights into emergence of coherent structures like cyclones and anticyclones from chaotic conditions.
A team of experts from Sam Houston State University is developing a novel investigative tool using micro Raman spectroscopy to analyze inkjet printer signatures. The goal is to provide reliable leads in counterfeit cases while being time-effective and non-destructive.
A new study published in New Journal of Physics found that physicists pay less attention to articles with dense mathematical details, indicating real and widespread barriers to scientific communication. The researchers suggest improving clearer presentation of technical work is key to bridging this gap.
Researchers investigated cloud-to-ground (CG) and intracloud (IC) lightning characteristics over the Beijing Metropolitan Region from 2005-2007. They found IC lightning occurs more frequently than CG lightning, with most activity occurring during summer months and a southeastwardly increasing pattern in flash density.
A US study found that the country secretly detains citizens from democracies in 'black sites,' while openly holding those from non-democracies in known prisons. The researchers argue that this behavior is rooted in the 'Perceptual Theory of Legitimacy', which suggests good things happen to good people, and bad things happen to bad people.
A study by Carnegie Mellon University researchers analyzed Hillary Clinton's two political memoirs, revealing links to her public perception problems. The analysis found that Clinton's writing styles were influenced by the 'double bind' women face in politics, with a tendency to be pragmatic and avoid personal revelations.
The Great Elephant Census reports a 30% decline in savannah elephant populations over the last decade, primarily due to poaching. The census estimates that there are currently around 352,271 savannah elephants in Africa, with conservation efforts facing significant challenges to protect these endangered animals.
The Great Elephant Census reports a substantial decline in African savanna elephant numbers over the last decade, with an estimated population of 352,271 in 18 countries. Poaching is the primary cause of this decline, with large numbers of carcasses found in protected areas indicating that elephants are struggling to survive.
Scientists from Argonne National Laboratory have developed a way to reconcile two fundamentally different pictures of reality in statistical mechanics. The new approach provides a general and exact solution for the density of states, which is essential for understanding system behavior.
The study analyzed responses from 142 respondents in 36 countries to identify key findings on traffic safety cultures worldwide. The results revealed two approaches to traffic safety culture: an objective reality-based approach and a threat-elimination focus, with poorer countries emphasizing safety.
Researchers developed a novel visualization tool to explore dynamic Bitcoin transactional data, revealing behavioral patterns and potential money laundering activities. The top-down approach enables drill-down analysis of individual transactions.
The American Statistical Association publishes guidelines for researchers to treat statistics as a science, not a recipe. The 10 simple rules emphasize the need for principled statistical analysis to avoid misperceptions and inaccurate claims.
The guidelines aim to help researchers avoid common pitfalls in statistical reasoning and ensure accurate findings. The rules emphasize the importance of data quality, careful design, and replication to increase the likelihood of robust results.
Research estimates 25% of current domains are unmet demand due to lack of available high-quality names and locations. New top-level domains (not-coms) may alleviate this issue, sparking a potential boom in domain registrations.
A new study identified distinct patient diagnoses and emergency department usage patterns linked to high risk of ED readmission. The researchers used electronic healthcare records data from over one million patients to build predictive models for risk of 72-hour ED readmission.
Researchers have developed a system to enhance ACS data, enabling easier analysis of critical information in predefined geographic areas. The new tools allow planners to access socio-economic data on desired regions and time periods, making it easier for policy decisions.
The number of statistics graduates has increased by 300% since the 1990s, with bachelor's degrees growing 17% from 2013 to 2014. Demand for statisticians is expected to outpace growth, with a potential shortage of 140,000 workers with deep analytical skills by 2018.
Researchers use Raman spectroscopy to measure strain at each pixel on graphene's surface, enabling quick and accurate monitoring of defects. This breakthrough could help prevent defects caused by strain in high-quality graphene production.
A University of Granada study found that young male cyclists between 15 and 24 years old are at highest risk of death in traffic accidents. The researchers analyzed data from over 50,000 cyclists involved in accidents between 1993 and 2009, concluding that age and sex play a significant role in mortality rates among cyclists.
The University of Maryland has received a $1.8 million grant from the National Institutes of Health to improve Bioconductor, an open-source data visualization software used in genomic marker identification for cancer and other diseases.
Researchers analyzed 400 fashion models' Instagram accounts to predict popularity, finding high likes and comments were associated with runway success. Height and representation by top agencies also played a significant role in predicting success.
A study analyzing over 4,000 fossil bones from the Dikika site in Ethiopia confirms that marks on two 3.4 million-year-old animal bones were caused by butchery with stone tools, not trampling. The findings support a previous interpretation published in Nature in 2010 and provide new evidence for human evolution.
Statisticians combine academic and commercial techniques to analyze large data sets, reducing processing time and increasing insight. This technology has the potential to aid researchers in various fields, including astronomy, by providing quicker insights from Big Data.
A study by Carnegie Mellon University found that significantly fewer women than men were shown online ads promising them help getting jobs paying more than $200,000. Researchers used simulated user profiles to probe the online ad ecosystem and discovered gender-based discrimination in Google ads.
The center, led by Iowa State University, aims to develop tools for evaluating pattern and digital evidence analysis methods and an education program for judges, lawyers, and forensic science investigators. This will enhance the scientific basis for forensic evidence used in the criminal justice system.
A study by Xuan Chen and Carlos A. Flores found that Job Corps participants experienced average wage effects of 5.7-13.9% four years after graduation, with non-Hispanics seeing greater gains.
Researchers use statistical analysis to predict the spread of invasive European earthworm species Dendrobaena octaedra into Canada's boreal forest, forecasting it will expand from 3% to 39% of the forest floor by 2056. The worms are entering the forest via roadways, altering soil pH and decomposition rates.
A University of Utah anthropologist analyzed statistics to determine how Pacific islands were settled between 3,500 and 900 years ago. The study found that seafarers traveled mostly against prevailing winds and sought easily visible islands, rather than relying on distance or resource availability.
A new statistical analysis reveals that the Mexican government's war against drugs increased the average murder rate in regions subjected to military-style interventions. The study found an average increase of nearly 11 homicides per 100,000 inhabitants across 18 affected regions, with some experiencing a significant reduction and othe...
A study found that noninferiority trials often lack clear justification for chosen margins, leading to concerns about their validity. The authors highlight the need for improved registration and reporting standards within publicly accessible trial registries.
An interdisciplinary team has developed a new method to analyze the structure of long bones, providing insights into human evolution and functional morphology. The study focused on the big toe's impact on gait and locomotion, revealing structural differences between humans, chimpanzees, and gorillas.
The American Statistical Association analysis shows that statistics degrees nearly doubled during 2010-2013, outpacing other computer-related disciplines. This growth is attributed to the increasing demand for workers with statistical and analytical skills in the job market.
Experts simulated 10,000 parties to determine optimal cracker distribution for small gatherings. A paired system with each pair pulling a single cracker yields the fewest winners and losers.
Researchers from Ohio State University reviewed 19 studies on the effectiveness of mindfulness-based programs for weight loss. While some studies showed weight loss among participants who practiced mindfulness, others found no relationship between the two. The review highlights the need for further research to understand how mindfulnes...
A recent study by Brandeis University researchers found that KKK activity in the 1960s shifted voters' allegiance from Democratic to Republican in the South, a trend still evident today. The study suggests that racial attitudes and social movements can have lasting effects on politics, contributing to polarization.
A new study from the University of Waterloo reveals that longer commutes are related to lower life satisfaction and increased stress levels. Comuters with time for physical activity had higher life satisfaction.
A study of over 9,000 urban data sets from 20 cities reveals the growing availability and quality of these datasets, enabling better analysis and decision-making. The findings highlight the importance of integrating different data sets and overcoming challenges in accessing and utilizing this valuable resource.
Researchers found sthenurine kangaroos, an extinct family, had a sturdy spine and broad pelvis, ideal for weight-bearing on one leg. This contradicts the modern kangaroo's hopping habit, suggesting bipedal walking as their slow-speed locomotion.
A comprehensive family tree of meat-eating dinosaurs reveals the gradual emergence of bird-like features, such as feathers and wishbones. The study supports a theory that sudden evolutionary changes led to an explosion in avian diversity, resulting in thousands of species today.
Researchers propose a new method of flood risk assessment that starts with the null hypothesis of 'no trend' but explicitly assesses statistical uncertainties. This approach could help water managers better estimate future flood risks and avoid wasting money on unneeded infrastructure.
A new study published in Language presents a rigorous linguistic analysis that contradicts previous research on the origins of written language. The analysis suggests that popular statistical measures do not support the claim that certain symbol systems, such as the Indus Valley and Pictish symbols, are examples of written language.
A statistical analysis of online wedding registries reveals that gift givers prioritize either social benefits or saving money, resulting in a bimodal distribution of price preferences. The study provides insights into the psychology behind wedding gift giving and its potential impact on marketing strategies.
Researchers propose using software like R Markdown to teach students the concept of reproducibility, which can lead to more transparent science. The study found that introductory statistics students who used R Markdown for homework assignments showed gradual gains in preference and no negative impact on grades.
Disney researchers found that teams with more defensive role swaps are more likely to make three-point shots. They analyzed tracking data from the 2012-13 NBA season and found a significant correlation between role swaps and shot success.
Researchers found that certain behaviors may not be observable without massive data, highlighting the importance of considering data quantity in predictive modeling. The study suggests that sweeping assumptions about bigger being better can be dangerous and that the power of analytic tools depends on their appropriate use.
A Johns Hopkins-led study of over 3,000 family caregivers suggests they have a nine-month life expectancy extension over six years. Contrary to long-standing conventional wisdom, caregiving is not associated with increased health risk but rather provides benefits.
A UCSB study analyzed USDA data spanning two decades, showing the relationship between landscape simplification and insecticide use varies greatly from year to year. The research suggests that simplistic landscapes may not be better or worse than complex ones when it comes to insect pest problems.
Researchers analyzed data from 100 instrumented vehicles and found that occasional seatbelt users are more likely to buckle up for trips on high-speed roads. The study suggests that perceived convenience plays a significant role in seatbelt use, with drivers opting out of wearing belts during local errands.
Researchers are using statistical approaches to analyze climate change risks, including the Atlantic Meridional Overturning Circulation. Bayesian statistics is a key tool in quantifying uncertainty and predicting future events. Collaboration between disciplines is essential for advancing climate science and risk management.
Scientists have observed a rare pre-explosion outburst occurring just one month before a massive star underwent a supernova explosion. The findings validate a particular model predicting this type of event and provide insight into the processes taking place in the cores of such massive stars.
New research uses satellite images to estimate species richness and turnover, achieving nearly 100% accuracy. The method could improve biodiversity monitoring and conservation efforts by reducing costs and increasing efficiency.
Researchers developed an electronic nose to detect obstructive sleep apnoea, a condition associated with inflammation in the upper airways. The device accurately diagnosed sleep apnoea in patients, showing a sensitivity of 93%, and could potentially reduce costs by selecting patients who require further testing.
Researchers found that the spread of scores across different sports, such as volleyball and snooker, follows a similar distribution. They also discovered that this phenomenon applies to other everyday phenomena, including human wealth and population distribution, governed by power laws and the Pareto principle.
Researchers found long-range correlation between letters and words within texts, enabling conclusions about topic connections. Burstiness analysis also reveals representative words in passages.
Researchers at Ohio State University have combined different climate models using spatial statistics to project future seasonal temperature changes in North America. The analysis estimates that average land temperatures will rise around 2.5 degrees Celsius by 2070, with regional temperature rises varying across seasons and regions.
Researchers aim to predict Dragon Kings, statistical anomalies in natural disasters, using advanced statistical analysis. They have identified empirical evidence in abnormal rainfall, hurricanes, and sudden events.
The new IT application BootstRatio, developed by IDIBELL researchers, allows online statistical analysis of gene-expression data. It uses resampling techniques to generate a hypothetical distribution and provides comprehensible results for scientists.
The AADR has awarded the 2012 Neal W. Chilton Fellowship in Clinical Research to Bing-Yan Wang, an associate professor at the University of Texas Health Science Center. The fellowship will support Wang's clinical testing of a mouthwash effective against oral bacteria.
Researchers Rudolf Ahlswede and Harout Aydinian analyze a security-control model for statistical databases, proposing an optimal collection of SUM queries to prevent compromise of confidential information. Query restriction is one approach used to limit the amount of data that can be retrieved by users.