This paper presents a novel method for introductory teaching of the sample linear correlation coefficient from a bivariate dataset. Linear correlation is typically included in curriculums at the secondary and introductory tertiary levels of education. The method discussed herein can be used by educators in elementary courses at either of these levels. We explain how scatterplots with the addition of contour plots can be used to teach the strength and direction of linear relationship between two variables; and demonstrate the production of contour plots using statistical computing software. Finally, we show how this innovative method could be included in classroom activities.

中文翻译：

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使用轮廓图教学线性相关

本文提出了一种从双变量数据集中进行样本线性相关系数入门教学的新方法。线性相关通常包含在中学和入门级教育的课程中。教育工作者可以在这些级别中的任何一个级别的基础课程中使用本文讨论的方法。我们解释了如何用散点图加上等高线图来教授两个变量之间线性关系的强度和方向；并演示使用统计计算软件生成等高线图。最后，我们展示了如何将这种创新方法包括在课堂活动中。