论文英文练习 | 如何撰写英文数据分析-Mann-Whitney U检验

文摘   2024-12-13 11:26   马来西亚  


如何撰写英文数据分析-Mann-Whitney U检验


1. Statistical Method

To evaluate the difference between [Group 1] and [Group 2] on [Dependent Variable], a Mann-Whitney U test was performed. This non-parametric test is used for comparing the medians of two independent groups when the assumptions of normality are violated.

为了评估 [第 1 组] 和 [第 2 组] 在 [因变量] 上的差异,进行了 Mann-Whitney U 检验。此非参数检验用于在违反正态性假设时比较两个独立组的中位数。

2. Descriptive Statistics

Table 1 displays the descriptive statistics for [Dependent Variable] across the two groups.

表 1 显示了两组中 [Dependent Variable] 的描述性统计量。

Note:

  • N:represents the sample size in each group.
  • Median refers to the middle value of the data distribution.
  • IQR (Interquartile Range):indicates the variability, calculated as the difference between the 75th percentile and the 25th percentile.

N  表示每组中的样本数量。

中位数 是指数据分布的中间值。

IQR(四分位距)表示变异性,计算为第 75 个百分位数和第 25 个百分位数之间的差值。

3. Test Results

The Mann-Whitney U test revealed a significant difference in [Dependent Variable] between [Group 1] and [Group 2],U = XX.XX,Z = XX.XX,p = .XXX,r = .XX. The SPSS-style test results are summarized in Table 2.

Mann-Whitney U 检验显示 [第 1 组] 和 [第 2 组] 之间的 [因变量] 存在显著差异,U = XX.XX,Z = XX.XX,p = .   XXX,r = 。XX. 表 2 总结了 SPSS 风格的测试结果。



Example in an Educational Context

1. Statistical Method

To assess whether digital teaching methods outperform traditional methods in improving students’ mathematics test scores, a Mann-Whitney U test was conducted. This test was selected because the data did not meet the assumption of normality.

2. Descriptive Statistics

Table 1 summarizes the mathematics test scores for the traditional and digital teaching groups.

3. Test Results

The Mann-Whitney U test indicated a statistically significant difference in mathematics test scores between the two groups,U = 178.00,Z = -2.34,p = .019,r = .33. As shown in Table 2, the digital teaching method resulted in higher scores.

(SPSS表格)

4. Effect Size

Usingr=ZN, withZ=2.34Z = -2.34 and N=50N = 50, the effect size wasr=.33, indicating a moderate effect. This suggests that digital teaching methods had a meaningful impact on mathematics performance.

5. Interpretation

The findings highlight the effectiveness of digital teaching methods in enhancing student performance compared to traditional methods. This result aligns with previous studies emphasizing the benefits of technology integration in education.


适应注意事项

  1. 替换占位符文本:将 [组 1]、[组 2] 和 [因变量] 等术语替换为研究的具体内容。
  2. 包括原始数据: 使用描述性统计数据清楚地显示中位数和 IQR 值。
  3. 根据上下文进行调整:根据研究领域定制假设和解释部分。



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