Why Line Chart Baselines Can Start at Non-Zero
Posted by Armando Brito Mendes | Filed under Data Science, estatística, lições, visualização
Uma boa demonstração, com gráficos dinâmicos, de como os gráficos podem ser enganadores
By Nathan Yau
There is a recurring argument that line chart baselines must start at zero, because anything else would be misleading, dishonest, and an insult to all that is good in the world. The critique is misguided.
Tags: enganador, gáfico de linhas, gráficos, linha base
NBA Apps and data Database
Posted by Armando Brito Mendes | Filed under data sets, estatística, visualização
Uma lista de sites com dados, visualizações e apps sobre basqueteball
Sravan January 10, 2024 [NBA] #apps #shiny
This database has a list of apps and websites related to NBA Data and Visualizations.
Tags: app, basquetebol, dados, graficos
Attitudes towards tipping in the U.S.
Posted by Armando Brito Mendes | Filed under Data Science, estatística, visualização
um exemplo de utilização de pirâmide de idades (com barras acumuladas) noutro contexto
Tipping seems to be in a confusing spot right now. On the one hand, customers want to support workers, but on the other, tip suggestions seem to be rising towards uncomfortable rates and in places where people don’t usually tip. Pew Research surveyed 12,000 U.S. adults to see how we’re all feeling about the current state of tipping.
Tags: barras acumuladas, gorgetas, pirâmide de idades
What This Graph of a Dinosaur Can Teach Us about Doing Better Science
Posted by Armando Brito Mendes | Filed under Data Science, estatística, visualização
um texto muito bom sobre visualização de dados
“Anscombe’s quartet” and the “datasaurus dozen” demonstrate the importance of visualizing data
- By Jack Murtagh on September 7, 2023
Mark Twain once wrote, “There are three kinds of lies: lies, damned lies, and statistics.” (He attributed the quip to former British prime minister Benjamin Disraeli, but its true origin is unknown.) Given the foundational importance of statistics in modern science, this quote paints a bleak picture of the scientific endeavor. Thankfully, several generations of scientific progress have proved Twain’s sentiment to be an exaggeration. Still, we shouldn’t discard the wisdom in those words. While statistics is an essential tool for understanding the world, employing it responsibly and avoiding its pitfalls requires a delicate dance.
Tags: gráficos, visualização, visualizações
Causes of Death
Posted by Armando Brito Mendes | Filed under estatística, visualização
Um bom exemplo de utilização de heatmaps
By Saloni Dattani, Fiona Spooner, Hannah Ritchie and Max Roser
What are people dying from?
This question is essential to guide decisions in public health, and find ways to save lives.
Many leading causes of death receive little mainstream attention. If news reports reflected what children died from, they would say that around 1,400 young children die from diarrheal diseases, 1,000 die from malaria, and 1,900 from respiratory infections – every day.
This can change. Over time, death rates from these causes have declined across the world.
figshare – a home for research outputs
Posted by Armando Brito Mendes | Filed under Data Science, data sets, estatística
Uma excelente fonte de dados e estudos
the repository built to showcase all of your institution’s research outputs in one place
Tags: dados, data, estudos, research
Lotteries, Covid, and Communicating Risk
Posted by Armando Brito Mendes | Filed under estatística, lições, matemática, materiais ensino
Uma boa tentativa de explicar o conceito de risco de forma simples
Wayne Oldford
May 1, 2022
Two sides of the same coin?
A few years ago, I was the “go to guy” at the University of Waterloo, asked to speak to local media, whenever a lottery jackpot got stupendously large (and the news cycle got exceedingly slow). My purpose was to relate to their audience the size of the chance of winning in a way that was quick yet comprehensible, which I did with some success on local radio and television stations.
Inevitably, though, the next day I would hear back of listener disappointment – that some of the fun of purchasing a ticket had been removed. Joy came from anticipating winning the prize and my exposition killed that for many, by them having gained an appreciation of the chance of actually winning.
I felt a little bit bad about this. I wanted people to understand the probabilities but I didn’t want to be a kill joy.
Tags: probabilidades, risco
Midterm elections 2022: The issues that matter to Americans
Posted by Armando Brito Mendes | Filed under Data Science, estatística, infogramas \ dashboards, mapas SIG's, Sem categoria, visualização
Uma boa análise dos termos mais pesquisados por região nos EUA, com mapas.
As the 2022 midterms approach, see which issues people in your congressional district care about
All politics are local.
To identify the most decisive issues for this year’s midterm voters, Axios dug through Google Trends search data in each congressional district.
We are tracking two trends:
- Absolute interest, which ranks the topics people are Googling most in their districts.
- Relative interest, which compares the interest in a topic from one district to another.
For example, people in Montana’s 2nd Congressional District have been searching about “jobs” less frequently than people in most other districts. The topic has low relative interest there. But in the same district, people search “jobs” more than any other topic listed. So “jobs” still comes in as No. 1 for absolute interest.
You can learn more about how we measure absolute interest and relative interest below or scroll down to explore the results on your own.
Tags: EUA, google, termos pesquisados
Who We Spend Time with as We Get Older
Posted by Armando Brito Mendes | Filed under Data Science, estatística, visualização
Um gráfico de barras horizontais animando com variações ao longo do tempo
By Nathan Yau
In high school, we spend most of our days with friends and immediate family. Then we get older and get jobs, get married, and grow our own families to spend more time with co-workers, spouses, and kids. Here’s how things change, based on a decade of data from the American Time Use Survey, from age 15 to 80.
Tags: análise de dados, animação, dinâmico, gráfico de barras
Who Takes Care of the Kids, By Household Income
Posted by Armando Brito Mendes | Filed under estatística, visualização
Um exemplo de gráfico de barras com sub-barras
By Nathan Yau
Childcare is expensive in the United States. So as you would expect, higher-income households tend to use non-parental childcare more, whereas lower-income households tend more towards only parental care. Here are the percentages, based on 2019 estimates from the National Center for Education Statistics.
