Figure 3
From: Privacy-preserving GWAS analysis on federated genomic datasets
Computing χ2 statistic. obs[0] and obs[1] are the case group's low and high allele counts, respectively, with obs[2] and obs[3] as the respective counts for the control group. exp[0 ... 3] are the respective expected counts for each allele in each group. The "for" loop computes the χ2 statistic according to Equation 1.