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加权χ２检验应用广泛，但用计算器直接计算繁琐，费时易错。本文采用ＣＡＳＩＯｆｘ－１８０ｐ（或３６００ｐ、３８００ｐ、３９００ｐ）计算器编制其程序，使计算效率提高２０倍以上。
The weighted χ2 test is widely used, but it is time-consuming and error-prone to use the calculator to calculate it directly. This article uses CASIOfx-180p (or 3600p, 3800p, 3900p) calculator to compile its program to improve computational efficiency by more than 20 times.