Danh sách bài viết của Nguyễn Mỹ Hương

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Bài viết của Nguyễn Mỹ Hương

What Is Economics, and Why Is It Important?

Economics is the study of how humans make decisions in the face of scarcity. These can be individual decisions, family decisions, business decisions or societal decisions. If you look around carefully, you will see that scarcity is a fact of life. Scarcity ...

Tác giả: Nguyễn Mỹ Hương viết 15:50 ngày 25/05/2018 chỉnh sửa

Tree and Venn Diagrams

Sometimes, when the probability problems are complex, it can be helpful to graph the situation. Tree diagrams and Venn diagrams are two tools that can be used to visualize and solve conditional probabilities. A tree diagram is a special type of graph ...

Tác giả: Nguyễn Mỹ Hương viết 15:50 ngày 25/05/2018 chỉnh sửa

Test of a Single Variance

A test of a single variance assumes that the underlying distribution is normal . The null and alternative hypotheses are stated in terms of the population variance (or population standard deviation). The test statistic is: ( n - 1 ) s 2 σ 2 ...

Tác giả: Nguyễn Mỹ Hương viết 15:49 ngày 25/05/2018 chỉnh sửa

Immigration

Most Americans would be outraged if a law prevented them from moving to another city or another state. However, when the conversation turns to crossing national borders and are about other people arriving in the United States, laws preventing such movement ...

Tác giả: Nguyễn Mỹ Hương viết 15:49 ngày 25/05/2018 chỉnh sửa

The Structure of Costs in the Short Run

The cost of producing a firm’s output depends on how much labor and physical capital the firm uses. A list of the costs involved in producing cars will look very different from the costs involved in producing computer software or haircuts or ...

Tác giả: Nguyễn Mỹ Hương viết 15:49 ngày 25/05/2018 chỉnh sửa

One-Way ANOVA

The purpose of a one-way ANOVA test is to determine the existence of a statistically significant difference among several group means. The test actually uses variances to help determine if the means are equal or not. In order to perform a one-way ANOVA test, ...

Tác giả: Nguyễn Mỹ Hương viết 15:49 ngày 25/05/2018 chỉnh sửa

Shifts in Aggregate Supply

The original equilibrium in the AD/AS diagram will shift to a new equilibrium if the AS or AD curve shifts. When the aggregate supply curve shifts to the right, then at every price level, a greater quantity of real GDP is produced. When the SRAS curve shifts to ...

Tác giả: Nguyễn Mỹ Hương viết 15:48 ngày 25/05/2018 chỉnh sửa

The Market System as an Efficient Mechanism for Information

Prices exist in markets for goods and services, for labor, and for financial capital. In all of these markets, prices serve as a remarkable social mechanism for collecting, combining, and transmitting information that is relevant to the market—namely, the ...

Tác giả: Nguyễn Mỹ Hương viết 15:48 ngày 25/05/2018 chỉnh sửa

Introduction to Unemployment

Out of Business Borders was one of the many companies unable to recover from the economic recession of 2008-2009. (Credit: modification of work by Luis Villa del Campo/Flickr Creative Commons) The Mysterious Case of the Missing ...

Tác giả: Nguyễn Mỹ Hương viết 15:48 ngày 25/05/2018 chỉnh sửa

Consumption Choices

Information on the consumption choices of Americans is available from the Consumer Expenditure Survey carried out by the U.S. Bureau of Labor Statistics. [link] shows spending patterns for the average U.S. household. The first row shows income and, after ...

Tác giả: Nguyễn Mỹ Hương viết 15:47 ngày 25/05/2018 chỉnh sửa

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What Is Economics, and Why Is It Important?

Tree and Venn Diagrams

Test of a Single Variance

Immigration

The Structure of Costs in the Short Run

One-Way ANOVA

Shifts in Aggregate Supply

The Market System as an Efficient Mechanism for Information

Introduction to Unemployment

Consumption Choices

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