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1·This model can be as easy as one input variable and one output variable (called a Scatter diagram in Excel, or an XYDiagram in OpenOffice.org).

此模型可以简单到只有一个输入变量和一个输出变量（在 Excel 中称为 Scatter 图形，或 OpenOffice.org 内的 XYDiagram）。

2·The piecewise polynomial regression model was established based on analyzing the scatter diagram of the speed change with the install distance.

最后，进行了回归结果分析，分析结果表明分段多项式回归模型是正确有效的。

3·A scatter plot diagram shows a variety of risks to improvement.

显示改进带来的各种风险的散布图。