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| bivariate data ： ウィキペディア英語版 |
bivariate data
In statistics, bivariate data is data that has two variables.〔(【引用サイトリンク】title=Bivariate )〕 The quantities from these two variables are often represented using a scatter plot. This is done so that the relationship (if any) between the variables is easily seen.〔National Council of Teachers of Mathematics. "Statistics and Probability Problem." Retrieved 7 August 2013 from http://www.nctm.org/uploadedFiles/Statistics%20and%20Probability%20Problem%202.pdf#search=%22bivariate data%22〕 For example, bivariate data on a scatter plot could be used to study the relationship between stride length and length of legs.
== Dependent and independent variables ==
(詳細はCorrelations occur between the two variables or data sets. These are determined as strong or weak correlations and are rated on a scale of 0-1. 1 being a perfect correlation and 0.1 being a weak correlation. In the case of long legs and long strides, there would be a strong correlation.〔Pierce, Rod. (4 Jan 2013). "Correlation". Math Is Fun. Retrieved 7 Aug 2013 from http://www.mathsisfun.com/data/correlation.html〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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