虽然这个访问计划比使用具体值但没有分布统计信息情况下的访问计划好,但不如既使用具体值又有分布统计信息时的访问计划。
Although the access plan is better than the access plan with concrete values without distribution statistics, it is worse than the access plan with concrete values with distribution statistics.
如果编目中没有列数据值分布信息,DB 2就会假设值是均匀分布的,这可能导致优化器选择非最优的访问路径。
Without column data-value distribution information in the catalog, DB2 will assume an even distribution of values, which may lead the optimizer to a sub-optimal access path.
因此,当您增加回答选项时,获得大的x平方分布值的统计概率应该增加,而获得较小x平方分布值的概率会减少。
So, as you add response options, the statistical probability of obtaining a large Chi Square value should increase and the probability of obtaining smaller Chi Square value decreases.
该设置用于查找 X平方分布的抽样分布中包含尾数区域等于alpha 断开值(0.05)的位置(或临界值)。
This setting is used to find the location (or critical value) on the Chi Square sampling distribution that includes a tail area equal to the alpha-cutoff value (0.05).
从对称分布来看,分布在中间值上面的与下面的差不多是相等的,最可能的值,即mode,是与中间值相等的。
In a symmetrical distribution, values are equally likely to fall above the mean as below it, and the most likely value, the mode, is equal to the mean.
重力异常线性构造信号极大值两侧的等值线分布范围比重力异常水平总梯度的极大值两侧等值线分布的范围要窄。
Both sides isopleth width of gravity anomaly linear structure signal is more narrow than that of gravity anomaly level total gradient.
根据绝缘子串的实际电压分布值与国标给定的电压分布值相比较,可以判断出有无劣化绝缘子片以及其位置。
We can estimate whether there is faulty insulator and where by comparing the actual and the measured value of the distribution voltage.
认为随着软件演化,度分布系数和入度分布系数呈下降趋势,最大节点入度值则呈增大的趋势;而出度分布系数和最大节点出度值则变化有限。
With the evolving software, both the degree distribution coefficient and in-degree distribution coefficient tend to decrease but the in-degree of maximum node tends to increase.
对于二元正态分布函数,仅需给定插值区域两边的双边界值,即可得到该区域上任意一点分布函数值。
With the given values of bivariate normal distribution function on the two biboundaries of a rectangular region, the values of distribution function on the rectangular region can be found.
结果表明,膜厚分布的计算值与实测值符合的很好,并比较了不同气压、靶片距对淀积粒子能量和入射角分布的影响。
The simulation result of thickness distribution is in keeping with the measurement. The effects of sputtering condition on the distribution of thickness, energy and incident angle are also studied.
结果表明,膜厚分布的计算值与实测值符合的很好,并比较了不同气压、靶片距对淀积粒子能量和入射角分布的影响。
The simulation result of thickness distribution is in keeping with the measurement. The effects of sputtering condition on the distribution of thickness, energy and incident angle are also studied.
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