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Seja o conjunto de vetores {P1, P2, P3, P4, P5, ...... , Pr} e P um vetor tal que , tem-se que
Considere o conjunto de dados:
É correto afirmar que os comandos do software R para produzir como saída o teste de Shapiro-Wilk para verificar a normalidade (Gaussianidade) dos dados são
Considere o conjunto de dados:
É correto afirmar que os comandos do software R para produzir como saída o histograma dos dados são:
O gráfico a seguir mostra o crescimento da população mundial com valores em milhões. Observa-se que o crescimento vertiginoso se deu a partir do século XIX. Tal crescimento foi causado devido
Uma descrição típica da amostra, cuja distribuição de frequências está adiante, é composta da descrição gráfica e descrição numérica. São estatísticas descritivas da amostra os valores
Os pontos de intersecção da reta com a circunferência do
círculo unitário são
A estrutura de correlação do vetor aleatório
com dimensão é dada pela
matriz
Então, as componentes
principais correspondentes são:
A pesquisa operacional (PO), também chamada de ciência da administração, é um mérito quantitativo que ajuda no planejamento, na solução de problemas e no processo de tomada de decisão. Essa pesquisa pode ser baseada em uma metodologia, sobre a qual NÃO podemos considerar a característica descrita na alternativa:
Uma amostra aleatória de 100 famílias foi selecionada com o objetivo de estimar o gasto médio mensal das famílias com medicamentos. Os resultados amostrais estão resumidos na distribuição de frequência, a seguir, segundo as classes de gastos, em 10 reais. Não existem observações coincidentes com os extremos das classes.
As melhores estimativas para a média aritmética e para
a variância amostral são, aproximada e respectivamente,
A partir da distribuição de frequência apresentada na tabela e considerando que “K” é um número real, o valor da média, da mediana e da moda da distribuição é, respectivamente:
As questões de nos 41 a 46 são referentes aos resultados do ENADE 2006, disponíveis em www.inep.gov.br.
Responda às questões de nos 41 a 43 com base nos percentuais das respostas de alunos de uma área específica de determinada Instituição de Ensino Superior (IES), participantes do ENADE 2006, a algumas questões do questionário socioeconômico relativas aos hábitos de leitura.
A questão de número 23 do questionário socioeconômico envolve uma variável do tipo
How to dig out from the information avalanche
Majority of workers feel overwhelmed by deluge of data, survey finds
By Eve Tahmincioglu
updated 8:18 p.m. ET March 16, 2008
Don’t expect Shaun Osher, the CEO of Core Group
Marketing in New York, to answer your e-mail right away.
He has stopped responding to e-mails every minute and
only checks his e-mail account twice a day. He also started
5 turning off his BlackBerry during meetings.
This tactic has made him so much more productive
that earlier this year he held a meeting with his staff of 50
and “strongly suggested” that they stop relying so heavily
on e-mail and actually start calling clients on the phone.
10 And, he requested his employees put cell phones and
PDAs on silent mode during meetings, as well as curtail
the common practice of cc-ing everybody when sending
out an e-mail. “There was so much redundancy, so much
unnecessary work,” he explains. “One person could handle
15 an issue that should take two minutes, but when an email
goes out and five people get cc-ed, then everybody
responds to it and there’s a snowball effect.”
It’s not that Osher has anything against technology. In
fact, he loves it. The problem is, last year he realized he
20 was inundated with so many e-mails and so much
information in general that he began to experience data
overload. “In the beginning, e-mail and all this data was a
great phenomenon, revolutionizing what we do. But the
pendulum has swung way too much to the other side,” he
25 maintains. “We’re less productive.”
Osher isn’t the only one out there under a data
avalanche. Thanks to technological innovations, you can
be talking to a customer on your cell phone, answering a
LinkedIn invitation on your laptop, and responding to email
30 on your PDA all at the same time. Besides, during
tough economic times, who will want to miss any
information when your job could be on the line if you indulge
in the luxury of being offline? Turns out, seven out of 10
office workers in the United States feel overwhelmed by
35 information in the workplace, and more than two in five
say they are headed for a data “breaking point,” according
to a recently released Workplace Productivity Survey.
Mike Walsh, CEO of LexisNexis U.S. Legal Markets,
says there are a host of reasons we’re all on the information
40 brink: “exponential growth of the size of the information
‘haystack,’ the immensity and immediacy of digital
communications, and the fact that professionals are not
being provided with sufficient tools and training to help
them keep pace with the growing information burden.”
45 ___ Ellen Kossek, a professor from Michigan State, believes
we are less productive in this age of 24-7 technology, and
our multitasking mentality has spawned a “not-mentallypresent”
society. “We’re becoming an attention-deficit
disorder society switching back and forth like crazy,”
50 Kossek says. “We’re connected all the time. We’re
working on planes, in coffee shops, working on the
weekends. Work is very seductive, but yet we’re actually
less effective.”
The key to getting your head above the data flood,
55 according to workplace experts, is managing and reducing
the information you’re bombarded with.
© 2008 MSNBC Interactive - (slightly adapted)
http://www.msnbc.msn.com/id/23636252/
Check the only alternative that presents a statement that is INCONSISTENT with the arguments and reasoning introduced in the text you have read.
Mark the sentence in which the idea introduced by the word in bold type is correctly described.
How to dig out from the information avalanche
Majority of workers feel overwhelmed by deluge of data, survey finds
By Eve Tahmincioglu
updated 8:18 p.m. ET March 16, 2008
Don’t expect Shaun Osher, the CEO of Core Group
Marketing in New York, to answer your e-mail right away.
He has stopped responding to e-mails every minute and
only checks his e-mail account twice a day. He also started
5 turning off his BlackBerry during meetings.
This tactic has made him so much more productive
that earlier this year he held a meeting with his staff of 50
and “strongly suggested” that they stop relying so heavily
on e-mail and actually start calling clients on the phone.
10 And, he requested his employees put cell phones and
PDAs on silent mode during meetings, as well as curtail
the common practice of cc-ing everybody when sending
out an e-mail. “There was so much redundancy, so much
unnecessary work,” he explains. “One person could handle
15 an issue that should take two minutes, but when an email
goes out and five people get cc-ed, then everybody
responds to it and there’s a snowball effect.”
It’s not that Osher has anything against technology. In
fact, he loves it. The problem is, last year he realized he
20 was inundated with so many e-mails and so much
information in general that he began to experience data
overload. “In the beginning, e-mail and all this data was a
great phenomenon, revolutionizing what we do. But the
pendulum has swung way too much to the other side,” he
25 maintains. “We’re less productive.”
Osher isn’t the only one out there under a data
avalanche. Thanks to technological innovations, you can
be talking to a customer on your cell phone, answering a
LinkedIn invitation on your laptop, and responding to email
30 on your PDA all at the same time. Besides, during
tough economic times, who will want to miss any
information when your job could be on the line if you indulge
in the luxury of being offline? Turns out, seven out of 10
office workers in the United States feel overwhelmed by
35 information in the workplace, and more than two in five
say they are headed for a data “breaking point,” according
to a recently released Workplace Productivity Survey.
Mike Walsh, CEO of LexisNexis U.S. Legal Markets,
says there are a host of reasons we’re all on the information
40 brink: “exponential growth of the size of the information
‘haystack,’ the immensity and immediacy of digital
communications, and the fact that professionals are not
being provided with sufficient tools and training to help
them keep pace with the growing information burden.”
45 ___ Ellen Kossek, a professor from Michigan State, believes
we are less productive in this age of 24-7 technology, and
our multitasking mentality has spawned a “not-mentallypresent”
society. “We’re becoming an attention-deficit
disorder society switching back and forth like crazy,”
50 Kossek says. “We’re connected all the time. We’re
working on planes, in coffee shops, working on the
weekends. Work is very seductive, but yet we’re actually
less effective.”
The key to getting your head above the data flood,
55 according to workplace experts, is managing and reducing
the information you’re bombarded with.
© 2008 MSNBC Interactive - (slightly adapted)
http://www.msnbc.msn.com/id/23636252/
Which option describes accurately the meaning relationship between the pairs of words?
In "...your job could be on the line if you indulge in the luxury of being offline?" (lines 32-33) the expressions 'on the line' and 'offline', respectively, mean
How to dig out from the information avalanche
Majority of workers feel overwhelmed by deluge of data, survey finds
By Eve Tahmincioglu
updated 8:18 p.m. ET March 16, 2008
Don’t expect Shaun Osher, the CEO of Core Group
Marketing in New York, to answer your e-mail right away.
He has stopped responding to e-mails every minute and
only checks his e-mail account twice a day. He also started
5 turning off his BlackBerry during meetings.
This tactic has made him so much more productive
that earlier this year he held a meeting with his staff of 50
and “strongly suggested” that they stop relying so heavily
on e-mail and actually start calling clients on the phone.
10 And, he requested his employees put cell phones and
PDAs on silent mode during meetings, as well as curtail
the common practice of cc-ing everybody when sending
out an e-mail. “There was so much redundancy, so much
unnecessary work,” he explains. “One person could handle
15 an issue that should take two minutes, but when an email
goes out and five people get cc-ed, then everybody
responds to it and there’s a snowball effect.”
It’s not that Osher has anything against technology. In
fact, he loves it. The problem is, last year he realized he
20 was inundated with so many e-mails and so much
information in general that he began to experience data
overload. “In the beginning, e-mail and all this data was a
great phenomenon, revolutionizing what we do. But the
pendulum has swung way too much to the other side,” he
25 maintains. “We’re less productive.”
Osher isn’t the only one out there under a data
avalanche. Thanks to technological innovations, you can
be talking to a customer on your cell phone, answering a
LinkedIn invitation on your laptop, and responding to email
30 on your PDA all at the same time. Besides, during
tough economic times, who will want to miss any
information when your job could be on the line if you indulge
in the luxury of being offline? Turns out, seven out of 10
office workers in the United States feel overwhelmed by
35 information in the workplace, and more than two in five
say they are headed for a data “breaking point,” according
to a recently released Workplace Productivity Survey.
Mike Walsh, CEO of LexisNexis U.S. Legal Markets,
says there are a host of reasons we’re all on the information
40 brink: “exponential growth of the size of the information
‘haystack,’ the immensity and immediacy of digital
communications, and the fact that professionals are not
being provided with sufficient tools and training to help
them keep pace with the growing information burden.”
45 ___ Ellen Kossek, a professor from Michigan State, believes
we are less productive in this age of 24-7 technology, and
our multitasking mentality has spawned a “not-mentallypresent”
society. “We’re becoming an attention-deficit
disorder society switching back and forth like crazy,”
50 Kossek says. “We’re connected all the time. We’re
working on planes, in coffee shops, working on the
weekends. Work is very seductive, but yet we’re actually
less effective.”
The key to getting your head above the data flood,
55 according to workplace experts, is managing and reducing
the information you’re bombarded with.
© 2008 MSNBC Interactive - (slightly adapted)
http://www.msnbc.msn.com/id/23636252/
When Shaun Osher affirms that "… the pendulum has swung way too much to the other side," (lines 23-24), he means that
In "One person could handle an issue that should take two minutes," (lines 14-15), "handle" means "to deal with". Mark the sentence in which the word "handle" is used in the same way.
How to dig out from the information avalanche
Majority of workers feel overwhelmed by deluge of data, survey finds
By Eve Tahmincioglu
updated 8:18 p.m. ET March 16, 2008
Don’t expect Shaun Osher, the CEO of Core Group
Marketing in New York, to answer your e-mail right away.
He has stopped responding to e-mails every minute and
only checks his e-mail account twice a day. He also started
5 turning off his BlackBerry during meetings.
This tactic has made him so much more productive
that earlier this year he held a meeting with his staff of 50
and “strongly suggested” that they stop relying so heavily
on e-mail and actually start calling clients on the phone.
10 And, he requested his employees put cell phones and
PDAs on silent mode during meetings, as well as curtail
the common practice of cc-ing everybody when sending
out an e-mail. “There was so much redundancy, so much
unnecessary work,” he explains. “One person could handle
15 an issue that should take two minutes, but when an email
goes out and five people get cc-ed, then everybody
responds to it and there’s a snowball effect.”
It’s not that Osher has anything against technology. In
fact, he loves it. The problem is, last year he realized he
20 was inundated with so many e-mails and so much
information in general that he began to experience data
overload. “In the beginning, e-mail and all this data was a
great phenomenon, revolutionizing what we do. But the
pendulum has swung way too much to the other side,” he
25 maintains. “We’re less productive.”
Osher isn’t the only one out there under a data
avalanche. Thanks to technological innovations, you can
be talking to a customer on your cell phone, answering a
LinkedIn invitation on your laptop, and responding to email
30 on your PDA all at the same time. Besides, during
tough economic times, who will want to miss any
information when your job could be on the line if you indulge
in the luxury of being offline? Turns out, seven out of 10
office workers in the United States feel overwhelmed by
35 information in the workplace, and more than two in five
say they are headed for a data “breaking point,” according
to a recently released Workplace Productivity Survey.
Mike Walsh, CEO of LexisNexis U.S. Legal Markets,
says there are a host of reasons we’re all on the information
40 brink: “exponential growth of the size of the information
‘haystack,’ the immensity and immediacy of digital
communications, and the fact that professionals are not
being provided with sufficient tools and training to help
them keep pace with the growing information burden.”
45 ___ Ellen Kossek, a professor from Michigan State, believes
we are less productive in this age of 24-7 technology, and
our multitasking mentality has spawned a “not-mentallypresent”
society. “We’re becoming an attention-deficit
disorder society switching back and forth like crazy,”
50 Kossek says. “We’re connected all the time. We’re
working on planes, in coffee shops, working on the
weekends. Work is very seductive, but yet we’re actually
less effective.”
The key to getting your head above the data flood,
55 according to workplace experts, is managing and reducing
the information you’re bombarded with.
© 2008 MSNBC Interactive - (slightly adapted)
http://www.msnbc.msn.com/id/23636252/
The purpose of this article is to
Text II
Off the Deep End in Brazil
Gerald Herbert
With crude still hemorrhaging into the Gulf of
Mexico, deep-water drilling might seem taboo just
now. In fact, extreme oil will likely be the new normal.
Despite the gulf tragedy, the quest for oil and gas in
5 the most difficult places on the planet is just getting
underway. Prospecting proceeds apace in the ultra-
deepwater reserves off the coasts of Ghana and
Nigeria, the sulfur-laden depths of the Black Sea, and
the tar sands of Venezuela’s Orinoco Basin. Brazil’s
10 Petrobras, which already controls a quarter of global
deepwater operations, is just starting to plumb its 9 to
15 billion barrels of proven reserves buried some four
miles below the Atlantic.
The reason is simple: after a century and a
15 half of breakneck oil prospecting, the easy stuff is
history. Blistering growth in emerging nations has
turned the power grid upside down. India and China
will consume 28 percent of global energy by 2030,
triple the juice they required in 1990. China is set to
20 overtake the U.S. in energy consumption by 2014.
And now that the Great Recession is easing, the
earth’s hoard of conventional oil is waning even
faster. The International Energy Agency reckons the
world will need to find 65 million additional barrels a
25 day by 2030. If the U.S. offshore-drilling moratorium
drags on, look for idled rigs heading to other shores.
Available in:
<http://www.newsweek.com/2010/06/13/off-the-deep-end-in-brazil.html>
Retrieved on: June 19, 2011.
In Text II, Herbert illustrates the possibility of “...idled rigs heading to other shores.” (line 26) EXCEPT when he mentions
Text II
Off the Deep End in Brazil
Gerald Herbert
With crude still hemorrhaging into the Gulf of
Mexico, deep-water drilling might seem taboo just
now. In fact, extreme oil will likely be the new normal.
Despite the gulf tragedy, the quest for oil and gas in
5 the most difficult places on the planet is just getting
underway. Prospecting proceeds apace in the ultra-
deepwater reserves off the coasts of Ghana and
Nigeria, the sulfur-laden depths of the Black Sea, and
the tar sands of Venezuela’s Orinoco Basin. Brazil’s
10 Petrobras, which already controls a quarter of global
deepwater operations, is just starting to plumb its 9 to
15 billion barrels of proven reserves buried some four
miles below the Atlantic.
The reason is simple: after a century and a
15 half of breakneck oil prospecting, the easy stuff is
history. Blistering growth in emerging nations has
turned the power grid upside down. India and China
will consume 28 percent of global energy by 2030,
triple the juice they required in 1990. China is set to
20 overtake the U.S. in energy consumption by 2014.
And now that the Great Recession is easing, the
earth’s hoard of conventional oil is waning even
faster. The International Energy Agency reckons the
world will need to find 65 million additional barrels a
25 day by 2030. If the U.S. offshore-drilling moratorium
drags on, look for idled rigs heading to other shores.
Available in:
<http://www.newsweek.com/2010/06/13/off-the-deep-end-in-brazil.html>
Retrieved on: June 19, 2011.
According to Text II, in spite of the oil spill disaster in the Gulf of Mexico,
Conheça nossos planos