pearson相关
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| pearson相关 [2023/04/05 12:17] – 创建 yunyuqu | pearson相关 [2024/04/12 16:23] (当前版本) – [Pearson correlation analysis] zwz | ||
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| + | **4.Pearson相关的解释** | ||
| + | - 相关≠因果关系 | ||
| + | - 数据中的分数范围对相关有非常大的影响 | ||
| + | - 非常值会对相关系数产生非常大的影响 | ||
| + | - 解释关系强度应考虑 r², | ||
| + | * r＞0.7高度相关； | ||
| + | * 0.5＜r＜0.7中度相关； | ||
| + | * r＞0.3的相关才具有统计意义 | ||
| ---- | ---- | ||
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| + | ====Pearson correlation analysis==== | ||
| + | **1.Purpose** | ||
| + | * Measure the degree and direction of linear correlation between two variables (generally used for isometric and proportional data) | ||
| + | |||
| + | ---- | ||
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| + | **2.Definition formula** | ||
| + | * also known as product moment correlation | ||
| + | * {{: | ||
| + | * | ||
| + | * {{: | ||
| + | |||
| + | |||
| + | ---- | ||
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| + | **3.Calculating SP ( compared with SS)** | ||
| + | * {{: | ||
| + | |||
| + | ---- | ||
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| + | **4.Interpretation of Pearson' | ||
| + | - correlation≠causal relationship | ||
| + | - The range of scores in the data has a very large impact on the correlation. | ||
| + | - Extraordinary values can have a very large effect on the correlation coefficient | ||
| + | - Interpretation of the strength of the relationship should take into account r², not just r. | ||
| + | * r＞0.7 is highly correlated； | ||
| + | * 0.5＜r＜0.7 is moderately correlated； | ||
| + | * The correlation is only statistically significant for r > 0.3. | ||
pearson相关.1680697058.txt.gz · 最后更改: 2023/04/05 12:17 由 yunyuqu