美国论文代写：测试对小学生的影响

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美国论文代写：测试对小学生的影响

在学校接受和接受老师的最大指导的儿童，他们的学习能力发展。当他们学会问问题时，他们在学校学到了大部分的习惯。事实上，教师们承担着很大的责任，使这些孩子在未来变得自力更生。此外，总是有压力表现出色，特别是在这些测试，这是负责说明哪些学生将在高中毕业。这使得教师按照测试而不是制定教学大纲来提高学生的知识，使他们在现实生活中取得成功。这已经铺平了道路，把重点放在课堂上，导致学生有兴趣，他们的课堂学习，只激发学生离开学校。学校教育最重要的目的之一就是让学生在现实世界中阐述他们所拥有的工具。然而，标准化的测试与这个目标相反。如果这是已知的，每个学生将进行测试的个人能力，结果将是显着的，并且有一个肯定的可能性，学生在里面更快乐，并会提高自己的自我形象。这样，学生可以发现自己的真正能力和力量，他们可以用在选择合适的主题和繁荣的教育流。

白皮书“标准化测试的后果，我们的公立学校被释放的佛罗里达州中央学校董事会联盟，讨论的影响，这样的测试对学生（斯特劳斯1）。本文论述了学生无法了解他们个人的选择和即时反馈影响到学生的动力和注意力测试结果对象。此外，学生没有达到第十级FCAT基准得分，因为规定的补习班，他们失去了以选修课。

美国论文代写：测试对小学生的影响

Children develop most of their learning abilities in schools where they undergo and accept the maximum instruction from teachers. They learn most of their habits in school when they learn to ask questions. Teachers in fact are taking a large responsibility in equipping these children to become self-reliant in their future. In addition, there is always a pressure to perform well over such tests especially on those tests which are responsible to illustrate which students will graduate in high school. This makes the teachers to develop the syllabus as per the tests rather than making a syllabus which enhances the knowledge of the students making them succeed in their real lives. This has paved way to shifting the focus in the classroom that causing the students to have less interest over their class room studies and only motivates students to leave school. One of the foremost aims of school education is to make the students elaborate the tools that they have in the real world, and for this they go to school. However, testing in standardized way does the opposite of this aim. If this was known and each student would be tested on individual abilities, the results would be remarkable, and there is a sure possibility of the student being happier inside and would improve his/her self-image. In this way, the students can discover their true abilities and their strength which they can use in selecting a suitable subject and prosper in that stream of education.

The White Paper ‘The Ramifications of Standardized Testing on our Public Schools’ being released by the Central Florida School Board Coalition, talks about the effects of such tests on students (Strauss 1). The paper discusses how students are unable to learn subjects of their personal choices and testing results with immediate feedback impacts into the students getting demotivated and lose focus. Additionally, students who do not reach the 10th grade FCAT benchmark score, because of mandated remediation classes, they lose out on taking electives.

美国波士顿学院论文代写：股票收益

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美国波士顿学院论文代写：股票收益

有效边界的计算已在Excel中完成。每个股票的预期收益（年化）已计算出的股票的平均回报率。此外，标准偏差计算使用Excel表中给出的回报。标准偏差也按年计算。在每个股票回报率，投资组合的回报范围是从0.11到0.19。对于每一个预期的平均求解器用于获得最小标准偏差。
为了得到有效的前沿，可以预期的回报最大化或标准偏差可以最小化。在这里，我们尽量减少标准偏差。有效边界可以限制或不受限制。在无限制的有效前沿，卖空是允许的，因此不会对资产的权重有任何约束。在有限效率边界中，个人资产的权重将被限制在0到1之间。除此之外，还会有一个约束，即所有资产的权重总和应为1。因此，将有共同的约束权重总结到1的有效前沿，并在有限的有效前沿将有额外的约束个人资产的权重（默顿，1972）
有不同的原因，投资者可能不使用该模型。第一个原因是投资者可能没有风险中性。投资者可规避风险或承担风险。对于他们的均值方差优化不成立。他们可以选择具有最高风险和回报的股票或风险最小的股票。
投资者可能不会购买部分股票，因此就不可能实现模型给出的精确输出。
它考虑到历史的回报和标准偏差。历史未必是对未来的正确表述。投资者预期收益可能与历史回报不同。投资者可能会认为，与过去相比，该股有望获得更好的回报。这可能是因为公司有了新项目。因此，可以与模型不考虑的投资者的信息。

美国波士顿学院论文代写：股票收益

The calculations for the efficient frontier has been done in excel. The expected return for each stock (annualized) has been calculated by taking the average of the returns of the stocks. Also the standard deviation is calculated using the returns given in the excel sheet. The standard deviation is also annualized. Looking at the each stock return, the portfolio returns range is taken from the 0.11 to 0.19. For each expected mean the solver is used to get the minimum standard deviation.
To get the efficient frontier either the expected return can be maximized or the standard deviation can be minimized. Here we have minimized the standard deviation. Efficient frontier can be restricted or unrestricted. In an unrestricted efficient frontier, short selling is allowed hence there will be no constraint on the weights of the assets. In the restricted efficient frontier the weights of individual asset will be restricted between 0 and 1. In addition to this there will be one more constraint, i.e. the sum of weights of all the assets should sum up to 1. Hence there will be common constraint of weights summing to 1 in both the efficient frontiers, and in restricted efficient frontier there will be additional constraints on the individual asset weights (Merton, 1972)

There are different reasons why investor may not use the model. First reason is that the investor may not be risk neutral. Investor may be risk averse or risk taking. For them the mean variance optimization does not hold true. They may go for stock which has the highest risk and return or the stock with least risk.
Investors may not be to buy partial stocks and hence it becomes impossible to implement the exact output given by the model.
It takes into account the historical return and standard deviation. History may not be correct representation of the future. Also the investor expected return may differ from the historical return. The investor may have the opinion that the stock is expected to give better returns as compared to the past. This can be due to the fact that the firm has got new projects. Thus there can be information with the investor which the model is not taking into account.