黑龙江水产2026，Vol.45Issue(1)：1-5,5.
χ2适合性检验在水生动物遗传育种中的常见应用及其在SPSS上的实现
Common applications of the χ2 goodness-of-fit test in genetic breeding of aquatic animals and its implementation in SPSS
摘要
Abstract
The χ2 goodness-of-fit test is a key statistical method for assessing whether observed data conform to the-oretical expectations.In the genetic breeding of aquatic animals,it is widely used to address critical issues such as verifying Mendelian inheritance laws and testing Hardy-Weinberg equilibrium.However,the scarcity of specialized textbooks and the generality of existing textbook cases often lead to difficulties in knowledge transfer for researchers,including inconsistent calculation of degrees of freedom and unclear conditions for continuity correction.To address these challenges,this paper systematically explains the principles and computational steps of the χ2 goodness-of-fit test.Using classical genetics case studies,it provides a detailed step-by-step demonstration of the method's im-plementation in SPSS software,including operational procedures and interpretation of results.Key considerations in its application—such as determining degrees of freedom,sample size requirements,theoretical model rationality,and correction conditions—are also highlighted.This work aims to offer clear and practical guidance for data analy-sis in aquatic genetic breeding research and education,promoting the standardized application of this method.关键词
χ2适合性检验/遗传育种/SPSS软件/数据分析/水生动物Key words
χ2 goodness-of-fit test/genetic breeding/SPSS/data analysis/aquatic animals分类
农业科技引用本文复制引用
刘红彩,于振海,和飞,朱树人,孟庆磊..χ2适合性检验在水生动物遗传育种中的常见应用及其在SPSS上的实现[J].黑龙江水产,2026,45(1):1-5,5.基金项目
山东省重点研发计划项目"农业良种工程(2024LZGC024)" （2024LZGC024）
山东省淡水渔业研究院科研创新人才基金项目"刀鲚种质资源收集保存与生物学特性研究" （）
