average value

简明释义

平均值

英英释义

例句

1.The average value of the test scores was 75, indicating that most students performed well.

测试分数的平均值是75，表明大多数学生表现良好。

2.In statistics, the average value can help identify trends in data over time.

在统计学中，平均值可以帮助识别数据随时间变化的趋势。

3.To find the average value of a dataset, sum all the numbers and divide by the count of numbers.

要找到数据集的平均值，将所有数字相加并除以数字的数量。

4.The average value of daily sales is crucial for forecasting future revenue.

每日销售的平均值对预测未来收入至关重要。

5.The average value of house prices in this neighborhood has increased over the past year.

这个社区的房价平均值在过去一年中有所上涨。

作文

In the realm of mathematics and statistics, the concept of average value plays a crucial role in understanding data sets and making informed decisions. The average value is defined as the sum of all values in a set divided by the number of values in that set. This simple yet powerful calculation provides a single representative figure that summarizes a collection of numbers, allowing us to grasp the overall trend without getting lost in individual variations.For instance, consider a scenario where a teacher wants to determine the performance of her students in a mathematics exam. She collects the scores of all twenty students and calculates the average value of their scores. Let’s say the scores are: 85, 90, 78, 92, 88, 76, 95, 89, 84, 91, 77, 93, 87, 82, 80, 94, 81, 86, 79, and 88. To find the average value, she would add all these scores together, resulting in a total of 1,740. Then, she divides this sum by the number of students, which is 20. Therefore, the average value of the students’ scores is 87.This average value gives the teacher an insight into how well her class performed as a whole, indicating that most students scored around 87. However, it is essential to recognize that the average value does not tell the complete story. It can sometimes be misleading, especially in cases where there are outliers—values that are significantly higher or lower than the rest. For example, if one student scored 50, the average value would drop considerably, even though the majority of students performed well.In real-world applications, the average value is frequently used in various fields such as economics, healthcare, and sports. In economics, for instance, the average value of household income in a region can help policymakers understand the economic health of that area. Similarly, in healthcare, calculating the average value of patient recovery times can assist hospitals in assessing the effectiveness of treatments.Moreover, understanding the average value is not limited to numerical data; it can also apply to qualitative assessments. For example, a restaurant might gather customer feedback ratings on a scale of 1 to 5. By calculating the average value of these ratings, the restaurant can evaluate its overall service quality and identify areas for improvement.In conclusion, the average value is a fundamental concept that serves as a valuable tool for summarizing data and making decisions. While it provides a quick snapshot of a dataset, it is crucial to consider the broader context and potential outliers that may affect its interpretation. By doing so, we can harness the power of the average value effectively, leading to more informed conclusions and actions in various aspects of life. Understanding the average value enables us to navigate through complex information and derive meaningful insights that can guide our choices and strategies in both personal and professional realms.

在数学和统计学领域，平均值的概念在理解数据集和做出明智决策方面扮演着至关重要的角色。平均值被定义为一组值的总和除以该组中的值的数量。这一简单而强大的计算提供了一个单一的代表性数字，总结了一系列数字，使我们能够把握整体趋势，而不至于在个体变化中迷失。例如，考虑一个场景，一位老师想要确定她的学生在数学考试中的表现。她收集了所有20名学生的分数，并计算出他们分数的平均值。假设分数为：85、90、78、92、88、76、95、89、84、91、77、93、87、82、80、94、81、86、79和88。为了找到平均值，她会将所有这些分数加在一起，得到总分1740。然后，她将这个总和除以学生人数，即20。因此，学生分数的平均值是87。这个平均值使老师对她班级的整体表现有了一个了解，表明大多数学生的分数在87左右。然而，重要的是要认识到，平均值并不能讲述完整的故事。它有时可能会误导，特别是在存在异常值的情况下——即明显高于或低于其余值的值。例如，如果有一名学生得了50分，那么平均值会显著下降，尽管大多数学生表现良好。在现实世界的应用中，平均值常常用于经济学、医疗保健和体育等各个领域。例如，在经济学中，一个地区家庭收入的平均值可以帮助政策制定者了解该地区的经济健康状况。同样，在医疗保健中，计算患者康复时间的平均值可以帮助医院评估治疗的有效性。此外，理解平均值不仅限于数值数据；它也可以应用于定性评估。例如，一家餐厅可能会收集顾客的反馈评分，评分范围为1到5。通过计算这些评分的平均值，餐厅可以评估其整体服务质量，并识别改进的领域。总之，平均值是一个基本概念，是总结数据和做出决策的宝贵工具。虽然它提供了数据集的快速快照，但考虑到更广泛的背景和可能影响其解释的异常值至关重要。通过这样做，我们可以有效利用平均值的力量，从而在生活的各个方面得出更明智的结论和采取行动。理解平均值使我们能够驾驭复杂的信息，得出有意义的见解，从而指导我们在个人和职业领域的选择和策略。