Questões de Inglês

Um pesquisador estimou os parâmetros a, b e c do modelo estatístico de regressão linear y = a + bx + cz + u. Sabe-se que Y é um vetor coluna com os níveis educacionais dos filhos, X e Z são vetores colunas com os níveis educacionais dos pais e das mães e u é um vetor de variáveis aleatórias normais, independentes, de média zero e desvio padrão constante. A técnica usada foi de minimização da soma dos quadrados dos erros. A correlação positiva entre os dados em X e em Z pode gerar, para a estimação, um problema de

O gráfico abaixo mostra a função y = x 2 , sendo x e y números reais, no primeiro quadrante. A partir da análise da função e de seu gráfico, conclui-se que a

Suponha que X e Y sejam dois conjuntos ordenados de dados. Ajusta-se a reta de regressão linear simples, y = a + bx, a estes dados. Os parâmetros a e b são estimados pela minimização da soma dos quadrados dos erros. A reta estimada

Uma pessoa tem curvas de indiferença entre dois bens, A e B, em ângulo reto, conforme se vê no gráfico abaixo. Os bens A e B são

Comparing Texts I and II,

According to paragraphs 9 and 10 (lines 55-65), investing in R&D

The boldfaced item is synonymous with the expression in parentheses in

According to paragraphs 5 and 6 (lines 28-38), Dutch disease is a

In “Without a ‘firm local content policy’, says Petrobras CEO, Dutch disease and the oil curse will take hold.” (lines 50-52), “take hold” means to

The communicative intention of Text I is to

Concerning the referent to the pronoun it, in the fragments below,

According to Text II, in spite of the oil spill disaster in the Gulf of Mexico,

Based on the meanings in Text I, the two words are antonymous in

In Text II, Herbert illustrates the possibility of “...idled rigs heading to other shores.” (line 26) EXCEPT when he mentions

Comparing the excerpt from Text I “Non-OECD countries are projected to lead oil demand growth this year and forecast to add 1.3 mb/d in 2H14 compared to the same period a year ago” (lines 13-15) to the excerpt from Text II “Non-OECD oil demand, led by Asia and the Middle East, looks set to overtake the OECD for the first time as early as 2Q13 and will widen its lead afterwards” (lines 24-27), one states that Text number

The expression from Text II upstream, midstream and downstream (lines 8-9) implies that investment programmes will be respectively directed to costs that involve

In the fragment of Text I “Less field maintenance in the North Sea and easing geopolitical tensions could also add further barrels in the coming two quarters." (lines 31-33), the expression easing geopolitical tensions means geopolitical tensions that are

In the following fragment of Text I: “Less field maintenance in the North Sea and easing geopolitical tensions could also add further barrels in the coming two quarters." (lines 31-33) the word quarters means a(an)

According to Text I, world oil demand in 2H13 was

The words of Text I: output (line 26), mild (line 30), balance (line 37) and inventories (line 42) may be replaced, without change in meaning, respectively, by:

In the fragments of Text I “World oil demand in 2H14 is anticipated to increase" (lines 2-3), “OECD (Organisation for Economic Co-operation and Development) demand is projected to decline" (lines 5-6), “oil demand growth in OECD Asia Pacific will largely be impacted" (lines 11-12), “Production in Russia and Brazil is also expected to increase" (lines 24-25) the boldfaced verb forms indicate

According to Text II, the statement “ongoing North American hydrocarbon revolution is a ‘game changer’.” (lines 14-15) suggests that the hydrocarbon revolution represents a

In the fragment of Text I “We’ve identified several tips for companies that want to see greater return on investment for millennial recruitment” (lines 23-25), the verb form in bold indicates that the

According to Text II, the expression Big Shift Change in its title is primarily related to the idea that the companies

In the fragment of Text I “CEB research shows that five-in-six hiring managers believe their new graduate hires present a lack of the skills and knowledge they consider necessary” (lines 9-12), the word lack can be replaced, without change in meaning, by

In the 8 th paragraph of Text I (lines 81-94), the word vacancies is used three times. To avoid one more repetition, the author chose as synonym for vacancies the word

Based on the 7 th paragraph of Text I (lines 67-80), it is implicit the author believes that

The main purpose of Text I is to

Based on the fragment of Text I “Using objective assessments to measure employability – a comprehensive evaluation of hard and soft skills and overall potential – improves the odds of finding the right hires for the business” (lines 40-43), one infers that objective assessments

From the fragment in Text II “Here are 3 strategies that can help ensure that your company is ready to cope with the Big Shift Change” (lines 24-25), one concludes that the 3 recommended strategies aim at