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Friday, September 16, 2022
Friday, September 16, 2022
观察法不仅仅是指用眼睛看,还包括其他如触觉、听觉等方面的体验。...
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Thursday, December 29, 2022
问卷中的填表说明可以集中放在问卷前面,也可以分散到各有关问题之前。...
Saturday, December 16, 2023
事先将总体各单位按某一标志排列然后依排列顺序和按相同的间隔来抽...
Friday, September 16, 2022
Thursday, September 15, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
很多因素之间存在因果关系,如果只是单纯地了解某一事物,而不去考察...
Friday, September 16, 2022
一元相关回归分析市场预测法,是根据()去预测一个因变量的市场预测方法。...
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()同时对具有两种或两种以上控制特征的每一个样本数目都作出具体的...
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Thursday, September 15, 2022
回归方程的显著性检验是通过计算()来进行的。A、S值B、F值C、r值D、Y值...
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