weighted index number; weighted index

简明释义

加权指数

英英释义

例句

1.The weighted index number helps in understanding the overall economic health by considering the significance of different sectors.

通过考虑不同部门的重要性，加权指数有助于理解整体经济健康状况。

2.Using a weighted index allows analysts to prioritize more significant factors in their evaluations.

使用加权指数使分析师能够在评估中优先考虑更重要的因素。

3.The economist calculated the weighted index number to better reflect the changes in consumer prices.

经济学家计算了加权指数以更好地反映消费者价格的变化。

4.The weighted index number was adjusted to account for inflation in the latest economic analysis.

在最新的经济分析中，加权指数经过调整以考虑通货膨胀。

5.In our financial report, we used a weighted index to assess the performance of various investments.

在我们的财务报告中，我们使用了加权指数来评估各种投资的表现。

作文

In the realm of statistics and economics, the concept of a weighted index number or weighted index plays a crucial role in analyzing data effectively. This statistical tool is used to measure changes in a variable or a group of variables over time, while taking into account the relative importance of each item in the dataset. The weighted index number provides a more accurate representation of the overall trends and patterns by assigning different weights to various components based on their significance or contribution. For instance, consider a scenario where we want to analyze the price changes of a basket of goods over a year. If we simply calculate an unweighted index, each item would contribute equally to the final result, regardless of its actual impact on consumer spending. However, in reality, some items, like food or housing, constitute a larger portion of household expenses than others, such as luxury goods. Thus, applying a weighted index allows us to reflect these differences more accurately. To illustrate this further, let’s say we have three categories of goods: food, clothing, and entertainment. If the total expenditure on food is significantly higher than that on clothing and entertainment, it makes sense to assign a greater weight to food when calculating the index. By doing so, we ensure that the fluctuations in food prices have a more pronounced effect on the overall index than changes in the prices of clothing or entertainment. The formula for calculating a weighted index number involves multiplying the price of each item by its respective weight, summing these products, and then dividing by the sum of the weights. This calculation yields an index that accurately reflects the weighted contributions of each item. Moreover, the application of weighted indices extends beyond mere price analysis. In finance, for example, stock market indices such as the S&P 500 are calculated using a weighted index number. Each stock in the index is weighted according to its market capitalization, meaning larger companies have a more substantial influence on the index's performance than smaller ones. This method provides investors with a clearer picture of the market's overall health and trends, helping them make informed decisions. Understanding weighted index numbers is also essential for policymakers. When evaluating economic indicators like inflation or GDP growth, they rely on these indices to gauge the economic landscape accurately. By considering the relative importance of various sectors, policymakers can develop strategies that address the most impactful areas of the economy. In conclusion, the weighted index number or weighted index is a vital statistical tool that enhances our ability to analyze and interpret data. By incorporating weights based on the significance of different components, we achieve a more nuanced understanding of trends and changes in various fields, including economics, finance, and beyond. As we continue to navigate an increasingly complex world, the importance of accurate data representation cannot be overstated, making the mastery of weighted index numbers essential for anyone involved in data analysis.

在统计学和经济学领域，加权指数或加权指数数值的概念在有效分析数据方面发挥着至关重要的作用。这种统计工具用于衡量一个变量或一组变量随时间变化的情况，同时考虑到数据集中每个项目的相对重要性。加权指数数值通过根据每个组成部分的重要性或贡献分配不同的权重，提供了对整体趋势和模式的更准确的表示。例如，考虑一个场景，我们想要分析一年中一篮子商品的价格变化。如果我们简单地计算一个未加权的指数，每个项目将对最终结果产生同等贡献，而不考虑其对消费者支出的实际影响。然而，实际上，一些项目，如食品或住房，占家庭开支的较大部分，而其他项目，如奢侈品，则占比较小。因此，应用加权指数使我们能够更准确地反映这些差异。为了进一步说明这一点，假设我们有三类商品：食品、服装和娱乐。如果食品的总支出明显高于服装和娱乐，那么在计算指数时给食品分配更大的权重是有道理的。通过这样做，我们确保食品价格的波动对整体指数产生更显著的影响，而不是服装或娱乐价格的变化。计算加权指数数值的公式涉及将每个项目的价格乘以其相应的权重，求和这些乘积，然后除以权重的总和。这个计算结果得出的指数准确反映了每个项目的加权贡献。此外，加权指数的应用不仅限于价格分析。在金融领域，例如，像标准普尔500这样的股市指数是使用加权指数数值计算的。指数中的每只股票根据其市值加权，这意味着较大的公司对指数表现的影响大于较小的公司。这种方法为投资者提供了市场整体健康状况和趋势的更清晰的图景，帮助他们做出明智的决策。了解加权指数数值对于政策制定者也至关重要。在评估经济指标如通货膨胀或GDP增长时，他们依赖这些指数来准确评估经济形势。通过考虑各个部门的相对重要性，政策制定者可以制定针对经济中最具影响力领域的战略。总之，加权指数数值或加权指数是一个重要的统计工具，增强了我们分析和解释数据的能力。通过结合基于不同组成部分的重要性的权重，我们实现了对各个领域趋势和变化的更细致的理解，包括经济、金融等。随着我们继续应对日益复杂的世界，准确的数据表示的重要性不容忽视，因此掌握加权指数数值对于任何参与数据分析的人来说都是必不可少的。