statistic variance的意思|示意

The method of minimum interclass variance needs to compute conic statistic in segmenting image, which costs a large computation but has less efficiency.

最小类内方差法分割图像时需要计算二次统计量，运算量大，效率不高。

Supposed the functional model is correct, the influence on the statistic of test for uniform variance with incorrect stochastic model is analyzed in detail and its formula is derived.

文中着重分析了在函数模型正确的前提下，采用不正确的随机模型对方差一致性检验统计量的影响，并给出了具体的影响公式。