Time series analysis and statistical test provide quantitative criteria to determine the optimum observation frequency.
时间序列分析和统计检验提供了优化地下水位监测频率的定量标准。
This article analyzes the plant electrical signal in time domain and frequency domain by using the statistical analysis method.
应用统计分析方法对植物电波信号进行了时域和频域上的分析。
Through Statistical analysis, the author finds out that the match frequency and time in 17 ~ (th) World Cup is obviously short comparing with 13 ~ (th) World Cup and 11 ~ (th) European Cup.
通过统计、对比研究发现：1第17届世界杯足球赛的比赛密度和比赛纯时间比第13届世界杯、第11届欧洲杯明显减少。
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