can u pls explain this

Table 2.3 A Comparison of Arithmetic and Geometric Means for Normalized Results in D a nults normalized to Computer A (b) Results normalized to Computer B Then problems: - 2.1,2.2,2.4 - 10.5,10.6,10.7,10.8,10.16 - 11.14, 11.11. 11.2 - 12.1 and 12.11