所谓规模变量是指货币需求函数中决定货币需求规模的变量，这类变量主要由财富和收入两种。
混合固定效应敏感依靠规模变量，浮点运算的问题。
MIXED fixed effects sensitive to magnitude of dependent variable, floating point problems.
如果不考虑GDP等规模变量，股市收益率下降是导致平均货币需求增长的主要因素。
If the scale variable such as GDP were not considered, the decreasing return of stock market is the dominant factor to explain the accelerating growth demand for money in the specified sample.
研究表明，规模变量、广告密度、国有产权变量对绩效影响显著。第六部分是个案分析。
The fifth part is to analyze the influence factors of the performance of the China's dairy manufacturing industry.
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