用计算机进行曲线拟合和回归分析

着重探讨了计算机这一强而有力的工具在实验数据分析和处理中应用 .将实验中得到的数据运用最小二乘法 ,通过编写程序实现向计算机输入实验测量数据 ,由计算机计算求出其函数表达式 ,明确表示出各物理量之间的关系 .同时在屏幕上作出实验数据点图和函数表达式的曲线 ,并将二者比较 ,进行回归分析 .从而实现了数据分析和处理的快捷、准确和直观 ,与以往的手工处理和查表计算等方法相比较 ,具有重大革新和改进 ,这在科学实验和生产实践中都有重要意义 .也可以在学校的实验教学中进行推广以适应教学改革趋势和提高教学质量的需要 .

Using Computer for Curve Fitting and Regression Analysis

We discuss the application of the computer as a powerful tool to data processing.Inputting experimental data to a computer,making use of calculating by the computer with the method of least squares,we get a function expression which shows the relation between the variables.At the same time,we can draw graphs of both experimental data and the function expression to compare and analyses them.So data processing is rapid,accurate and visual.It is also significant to scientific experiments and production practice.It is really an innovation and progress compared to the old methods,such as calculating by hand or tables.It can also be populated in the experiment teaching for meeting with the need of teaching reforming and the teaching quality improving.