Analysis 评分标准如何获得满分6分?
概述:
该标准评估学生报告在多大程度上体现了学生在研究中以匹配其研究问题的方式选择、记录、处理和解释了数据,且基于数据给出了结论。
需要几乎具有所有下面描述的特征才能得到满分6:
从raw data 看:
- Relevant qualitative data was collected. 记录了相关的定性数据。
- Raw data is displayed in a clear table. 原始数据清晰地呈现在表格中。
- The raw data table has correct units and uncertainties in headers. 原始数据表的标题中写明了正确的单位和误差。
- There is sufficient raw data to support the conclusion (at least 5 values of the independent variable for a linear relationship, more for a non-linear relationship ). 采集了足够的原始数据来支持结论(线性关系至少有5 个自变量值,非线性关系需要更多)。
- Relevant raw data are presented without including too much data so that the whole report does not go beyond 12 pages. 呈现了相关原始数据,但报告总页数不超过 12 页。
从raw data process 看:
- There is some processing of data (at least finding the mean should be demonstrated ). 展现了一些数据处理的过程(至少应包括多次测量计算平均值的步骤)。
- Processed data is in the correct number of significant figures. 处理后的数据具有合适数量的有效数字。
- Reference to the precision of results,i.e. the random errors of the data. 讨论数据的精度,即随机误差。
- Uncertainties have been propagated in an acceptable manner. 误差以可接受的方式传递。
从interpretation of data 看:
- Data is used to find the relationship or a value. 数据被用来发现变量间的关系或计算某物理量的值。
- Appropriate graphing /适当的作图方式。
- Processed data and the graph trend line produced is referred to and explained. 讨论并解释了基于处理后的数据作出的趋势线。
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