Online Appendix of the Paper "The Power of Words in Agile vs. Waterfall Development: Written Communication in Hybrid Software Teams"

In our submission to the Journal of Software and Systems, titled “The Power of Words in Agile vs. Waterfall Development: Written Communication in Hybrid Software Teams,” we present an exploratory case study conducted in a large software organization, AFAS Software. Our study investigates the influence of the development paradigm and the formality of communication channels on written communication within hybrid development teams. JSS Online Appendix This online appendix contains supplementary material to uphold transparency and facilitate the reproduction of the statistical analysis. Please refer to Section 2.1 for the research questions and hypotheses. The root folder includes the “Project Teams Composition.pdf” file, which contains the anonymized compositions of 20 project teams: 11 agile (PrAg) projects and 9 waterfall (PrWF) projects. This file lists the project team members involved in communication within the Microsoft Teams and Insite channels. Subfolder "SPSS Files" This subfolder includes the SPSS files, which contain the normality test and Mann-Whitney U Tests. Normality Test.spv: This file contains the results of the normality test. We performed the normality test. In most cases, the significance of Shapiro-Wilk is below 0.05; thus, the data is not normally distributed and fails to meet the assumption for the t-test. We, therefore, opted for the Mann-Whitney U test, the non-parametric alternative of the t-test. The files below contain the results of Mann-Whitney U Tests, which are presented in Appendix A - Tables A.7 (a), A.8 (a), A.9 (a): H1 - PrAG vs PrWF Product.spv: This file contains the results for hypothesis 1. H1.1 - PrAG vs PrWF Formal.spv: This file contains the results for hypothesis 1.1. H1.2 - PrAG vs PrWF Informal.spv: This file contains the results for hypothesis 1.2. The files below contain the results of Mann-Whitney U Tests, which are presented in Appendix A - Tables A.7 (b), A.8 (b), A.9 (b): H2 - PrAG vs PrWF Formality.spv: This file contains the results for hypothesis 2. H2.1 - PrWF Formal vs Informal.spv: This file contains the results for hypothesis 2.1. H2.2 - PrAG Formal vs Informal.spv: This file contains the results for hypothesis 2.2. Subfolder "Excel Files" This subfolder includes the necessary files to perform calculations, and the results of these calculations. JSS Paper.xlsx: This file contains the absolute numbers, which are used as input for the calculations. JSS-Statistics.py: This Python script uses the “JSS Paper.xlsx” file to perform calculations based on the hypotheses for Project Life Cycle Management (PMLC), Software Development Life Cycle (SDLC), and Speech Acts. The files below contain the results of the calculations: PMLC (RQ1A & RQ1B)_v1.xlsx: This file contains the results for the PMLC phases. The results are presented in Appendix A.1. SDLC (RQ1A & RQ1B)_v1.xlsx: This file contains the results for the SDLC phases. The results are presented in Appendix A.2. Speech Acts (RQ1A & RQ1B)_v1.xlsx: This file contains the results for the speech act types. The results are presented in Appendix A.3.

我们向《软件与系统学报》（Journal of Software and Systems，简称JSS）提交了题为《敏捷与瀑布式开发的话语力量：混合软件团队中的书面沟通》的论文，文中呈现了一项在大型软件机构AFAS软件（AFAS Software）中开展的探索性案例研究。本研究旨在探究开发范式与沟通渠道正式性对混合开发团队内书面沟通的影响。

JSS在线附录
本在线附录包含补充材料，以保障研究透明度并助力统计分析的复现。请参阅2.1节了解本研究的研究问题与研究假设。

根文件夹包含《Project Teams Composition.pdf》（项目团队构成）文件，其中收录了20个项目团队的匿名构成信息：11个敏捷项目（PrAg）与9个瀑布式项目（PrWF）。该文件列出了在微软Teams（Microsoft Teams）与Insite渠道内参与沟通的项目团队成员。

"SPSS Files"子文件夹
该子文件夹包含SPSS格式文件，涵盖正态性检验与曼-惠特尼U检验（Mann-Whitney U Tests）的相关内容。
《Normality Test.spv》（正态性检验）：收录正态性检验结果。本次检验中，多数情况下夏皮罗-威尔克检验（Shapiro-Wilk test）的显著性水平低于0.05，因此数据不符合正态分布，无法满足t检验的前提假设，故我们选用曼-惠特尼U检验作为t检验的非参数替代方法。
以下文件包含曼-惠特尼U检验结果，对应附录A中的表A.7(a)、A.8(a)、A.9(a)：
- 《H1 - PrAG vs PrWF Product.spv》：收录假设1的检验结果。
- 《H1.1 - PrAG vs PrWF Formal.spv》：收录假设1.1的检验结果。
- 《H1.2 - PrAG vs PrWF Informal.spv》：收录假设1.2的检验结果。
以下文件包含曼-惠特尼U检验结果，对应附录A中的表A.7(b)、A.8(b)、A.9(b)：
- 《H2 - PrAG vs PrWF Formality.spv》：收录假设2的检验结果。
- 《H2.1 - PrWF Formal vs Informal.spv》：收录假设2.1的检验结果。
- 《H2.2 - PrAG Formal vs Informal.spv》：收录假设2.2的检验结果。

"Excel Files"子文件夹
该子文件夹包含计算所需文件与计算结果。
《JSS Paper.xlsx》：收录用于计算输入的原始绝对数值。
《JSS-Statistics.py》：该Python脚本以《JSS Paper.xlsx》为数据源，针对项目生命周期管理（Project Life Cycle Management, PMLC）、软件开发生命周期（Software Development Life Cycle, SDLC）与言语行为（Speech Acts）开展基于研究假设的计算。
以下文件包含计算结果：
- 《PMLC (RQ1A & RQ1B)_v1.xlsx》：收录项目生命周期管理阶段的计算结果，对应附录A.1。
- 《SDLC (RQ1A & RQ1B)_v1.xlsx》：收录软件开发生命周期阶段的计算结果，对应附录A.2。
- 《Speech Acts (RQ1A & RQ1B)_v1.xlsx》：收录言语行为类型的计算结果，对应附录A.3。