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Statistics --- Tables --- Standard deviation --- Standard deviation
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Three recent rounds (2003, 2006, and 2009) of the Family Income and Expenditure Survey are matched to rainfall data from 43 rainfall stations in the Philippines to quantify the extent to which unusual weather has any negative effects on the consumption of Filipino households. It is found that negative rainfall shocks decrease consumption, in particular food consumption. Rainfall below one standard deviation of its long-run average causes food consumption to decrease by about 4 percent, when compared with rainfall within one standard deviation. Positive deviations above one standard deviation have a limited impact. Moreover, for households close to a highway or to a fixed-line phone, consumption appears to be fully protected from the impact of negative rainfall shocks.
Climate Change Economics --- Climate Change Mitigation and Green House Gases --- Climatic variability --- Food consumption --- Household adaptation strategies --- Macroeconomics and Economic Growth --- Negative rainfall shocks --- Poverty Reduction --- Regional Economic Development --- Science of Climate Change --- Standard deviation --- Water Conservation
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That remittances are a stable source of external finance seems to have become the received wisdom. In addition, many studies have found remittances to behave counter-cyclically, increasing during crises and times of hardship for the recipient countries. Are remittances reliable macroeconomic stabilizers? To answer this question, the present study examines the stability, cyclicality, and stabilizing impact of remittances in comparison with the same three features for other foreign-exchange inflows, namely foreign direct investment and official development aid. The analysis is performed at the country and regional levels rather than at the aggregate or global level (on which much of the received wisdom rests), because policymakers are concerned with the impact of remittances in their country rather than at the global level. The main findings for 1980-2007 are that in a majority of countries: i) official development aid is more stable than remittances, and remittances are more stable than foreign direct investment; ii) official development aid is counter-cyclical, while remittances are pro-cyclical, although less so than foreign direct investment; and iii) official development aid is stabilizing and remittances are destabilizing, although less so than foreign direct investment. The paper suggests that it is necessary to examine counter-cyclicality separately from the stabilizing impact, as the former does not seem to always imply the latter.
Business cycle --- Correlation coefficient --- Correlation coefficients --- Debt Markets --- Developing Countries --- Economic activity --- Economic Conditions and Volatility --- Economic crises --- Economic development --- Economic Theory and Research --- Emerging Markets --- Finance and Financial Sector Development --- Financial crises --- Financial systems --- Fluctuations --- Growth volatility --- Income --- Inflation --- Low income --- Macroeconomic shocks --- Macroeconomics and Economic Growth --- Middle income --- Middle income countries --- Output volatility --- Private Sector Development --- Remittances --- Standard deviation
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East Asia has experienced a dramatic decrease in output growth volatility over the past 20 years. This is good news, as output growth volatility affects poor households because of coping strategies that have long-term, harmful consequences, and the overall economy through its negative impact on economic growth. This paper investigates the factors behind this long decline in volatility, and derives lessons about ways to mitigate renewed upward pressure in face of the financial crisis. The authors show that if, on the one hand, high trade openness has sustained economic growth in the past several decades, on the other hand, it has made countries more vulnerable to external fluctuations. Although less frequent terms of trade shocks and more stable growth rates of trading partners have helped to reduce volatility in the past, the same external factors are now putting renewed pressure on volatility. The way forward seems therefore to be to counterbalance the external upward pressure on volatility by improving domestic factors. Elements under domestic control that can help countries deal with high volatility include more accountable institutions, better regulated financial markets, and more stable fiscal and monetary policies.
Business cycle --- Capita growth --- Crisis volatility --- Economic Conditions and Volatility --- Economic growth --- Economic outlook --- Economic performance --- Emerging Markets --- Financial markets --- Fluctuations --- Growth rate --- Growth rates --- Growth volatility --- High trade openness --- Income --- Low-income countries --- Macroeconomic volatility --- Macroeconomics and Economic Growth --- Monetary policies --- Private Sector Development --- Recessions --- Standard deviation --- Trade shocks --- World economy
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Many highly-disaggregated cross-country indicators of institutional quality and the business environment have been developed in recent years. The promise of these indicators is that they can be used to identify specific reform priorities that policymakers and aid donors can target in their efforts to improve institutional and regulatory quality outcomes. Doing so however requires evidence on the partial effects of these many very detailed variables on outcomes of interest, for example, investor perceptions of corruption or the quality of the regulatory environment. In this paper we use Bayesian Model Averaging (BMA) to systematically document the partial correlations between disaggregated indicators and several closely-related outcome variables of interest using two leading datasets: the Global Integrity Index and the Doing Business indicators. We find major instability across outcomes and across levels of disaggregation in the set of indicators identified by BMA as important determinants of outcomes. Disaggregated indicators that are important determinants of one outcome are on average not important determinants of other very similar outcomes. And for a given outcome variable, indicators that are important at one level of disaggregation are on average not important at other levels of disaggregation. These findings illustrate the difficulties in using highly-disaggregated indicators to identify reform priorities.
Access to information --- Algorithms --- Causation --- Correlations --- Econometrics --- Economic activity --- Economic development --- Economic growth --- Economic Theory & Research --- Economists --- Empirical analysis --- Empirical evidence --- Environment --- Environmental Economics & Policies --- Governance --- Governance Indicators --- Instrumental variables --- Linear regression --- Macroeconomics and Economic Growth --- Matrix --- Probabilities --- Probability --- Sample size --- Science and Technology Development --- Standard deviation --- Standard deviations --- Statistical & Mathematical Sciences --- Statistical significance
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Recent estimates of the welfare cost of consumption volatility find that it is significant in developing nations, where it may reach an equivalent of reducing consumption by 10 percent per year. Hence, examining the determinants of consumption volatility is of utmost relevance. Based on cross-country data for the period 1960-2005, the paper explains consumption volatility using three sets of variables: one refers to the volatility of income and the persistence of income shocks; the second set of variables refers to policy volatility, considering the volatility of public spending and the size of government; while the third set captures the ability of agents to smooth shocks, and includes the depth of the domestic financial markets as well as the degree of integration to international capital markets. To allow for potential endogenous regressors, in particular the volatility of fiscal policy and the size of government, the system is estimated using the instrumental variables method. The results indicate that, besides income volatility, the variables with the largest and most robust impact on consumption volatility are government size and the volatility of public spending. Results also show that deeper and more stable domestic financial markets reduce the volatility of consumption, and that more integrated financial markets to the international capital markets are associated with lower volatility of consumption.
Currencies and Exchange Rates --- Developing countries --- Domestic financial markets --- Economic Conditions and Volatility --- Economic Stabilization --- Economic Theory & Research --- Emerging Markets --- Finance and Financial Sector Development --- Fiscal policy --- Government spending --- Growth rates --- Income --- Instrumental variables --- Macroeconomics and Economic Growth --- Output volatility --- Private Sector Development --- Standard deviation --- Volatility
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Recent estimates of the welfare cost of consumption volatility find that it is significant in developing nations, where it may reach an equivalent of reducing consumption by 10 percent per year. Hence, examining the determinants of consumption volatility is of utmost relevance. Based on cross-country data for the period 1960-2005, the paper explains consumption volatility using three sets of variables: one refers to the volatility of income and the persistence of income shocks; the second set of variables refers to policy volatility, considering the volatility of public spending and the size of government; while the third set captures the ability of agents to smooth shocks, and includes the depth of the domestic financial markets as well as the degree of integration to international capital markets. To allow for potential endogenous regressors, in particular the volatility of fiscal policy and the size of government, the system is estimated using the instrumental variables method. The results indicate that, besides income volatility, the variables with the largest and most robust impact on consumption volatility are government size and the volatility of public spending. Results also show that deeper and more stable domestic financial markets reduce the volatility of consumption, and that more integrated financial markets to the international capital markets are associated with lower volatility of consumption.
Currencies and Exchange Rates --- Developing countries --- Domestic financial markets --- Economic Conditions and Volatility --- Economic Stabilization --- Economic Theory & Research --- Emerging Markets --- Finance and Financial Sector Development --- Fiscal policy --- Government spending --- Growth rates --- Income --- Instrumental variables --- Macroeconomics and Economic Growth --- Output volatility --- Private Sector Development --- Standard deviation --- Volatility
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Aimed at a diverse scientific audience, including physicists, astronomers, chemists, geologists, and economists, this book explains the theory underlying the classical statistical methods. Its level is between introductory "how to" texts and intimidating mathematical monographs. A reader without previous exposure to statistics will finish the book with a sound working knowledge of statistical methods, while a reader already familiar with the standard tests will come away with an understanding of their strengths, weaknesses, and domains of applicability. The mathematical level is that of an advanced undergraduate; for example, matrices and Fourier analysis are used where appropriate. Among the topics covered are common probability distributions; sampling and the distribution of sampling statistics; confidence intervals, hypothesis testing, and the theory of tests; estimation (including maximum likelihood); goodness of fit (including c2 and Kolmogorov-Smirnov tests); and non-parametric and rank tests. There are nearly one hundred problems (with answers) designed to bring out points in the text and to cover topics slightly outside the main line of development.
Mathematical statistics. --- Bayes' postulate. --- Fisher's transformation. --- Neyman-Pearson lemma. --- Smirnov, definition. --- changing variables. --- critical region, definition. --- efficiency, of an estimator. --- geometrical mean, definition. --- hypothesis testing. --- idempotent, definition. --- jackknife, definition. --- kurtosis, definition. --- linear models. --- mode, definition. --- multivariate Gaussian. --- percentile, standard error. --- rank of a matrix. --- signs test. --- standard deviation, definition. --- variance, definition,.
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That remittances are a stable source of external finance seems to have become the received wisdom. In addition, many studies have found remittances to behave counter-cyclically, increasing during crises and times of hardship for the recipient countries. Are remittances reliable macroeconomic stabilizers? To answer this question, the present study examines the stability, cyclicality, and stabilizing impact of remittances in comparison with the same three features for other foreign-exchange inflows, namely foreign direct investment and official development aid. The analysis is performed at the country and regional levels rather than at the aggregate or global level (on which much of the received wisdom rests), because policymakers are concerned with the impact of remittances in their country rather than at the global level. The main findings for 1980-2007 are that in a majority of countries: i) official development aid is more stable than remittances, and remittances are more stable than foreign direct investment; ii) official development aid is counter-cyclical, while remittances are pro-cyclical, although less so than foreign direct investment; and iii) official development aid is stabilizing and remittances are destabilizing, although less so than foreign direct investment. The paper suggests that it is necessary to examine counter-cyclicality separately from the stabilizing impact, as the former does not seem to always imply the latter.
Business cycle --- Correlation coefficient --- Correlation coefficients --- Debt Markets --- Developing Countries --- Economic activity --- Economic Conditions and Volatility --- Economic crises --- Economic development --- Economic Theory and Research --- Emerging Markets --- Finance and Financial Sector Development --- Financial crises --- Financial systems --- Fluctuations --- Growth volatility --- Income --- Inflation --- Low income --- Macroeconomic shocks --- Macroeconomics and Economic Growth --- Middle income --- Middle income countries --- Output volatility --- Private Sector Development --- Remittances --- Standard deviation
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East Asia has experienced a dramatic decrease in output growth volatility over the past 20 years. This is good news, as output growth volatility affects poor households because of coping strategies that have long-term, harmful consequences, and the overall economy through its negative impact on economic growth. This paper investigates the factors behind this long decline in volatility, and derives lessons about ways to mitigate renewed upward pressure in face of the financial crisis. The authors show that if, on the one hand, high trade openness has sustained economic growth in the past several decades, on the other hand, it has made countries more vulnerable to external fluctuations. Although less frequent terms of trade shocks and more stable growth rates of trading partners have helped to reduce volatility in the past, the same external factors are now putting renewed pressure on volatility. The way forward seems therefore to be to counterbalance the external upward pressure on volatility by improving domestic factors. Elements under domestic control that can help countries deal with high volatility include more accountable institutions, better regulated financial markets, and more stable fiscal and monetary policies.
Business cycle --- Capita growth --- Crisis volatility --- Economic Conditions and Volatility --- Economic growth --- Economic outlook --- Economic performance --- Emerging Markets --- Financial markets --- Fluctuations --- Growth rate --- Growth rates --- Growth volatility --- High trade openness --- Income --- Low-income countries --- Macroeconomic volatility --- Macroeconomics and Economic Growth --- Monetary policies --- Private Sector Development --- Recessions --- Standard deviation --- Trade shocks --- World economy
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