variance n. 1.變化,變動(dòng),變更;變度,變量;【統(tǒng)計(jì)】(平)方(偏)差。 2.(意見等的)相異;不和,沖突,爭(zhēng)論。 3.【法律】訴狀和供詞的不符。 at variance with 和…不和;和…不符 (at variance with the facts 不符事實(shí)。His conduct is at variance with his words. 他言行不符)。 set at variance 使不睦,離間。
Firstly, several methods are used to test if there is heteroscedasticity in the data . then some variance stabilizing transformation methods are applied to the data . finally, it is pointed out that the least squares fitting may be used to the transformed data 先用幾種方法對(duì)數(shù)據(jù)是否具有異方差性進(jìn)行檢驗(yàn),然后選擇適當(dāng)?shù)姆椒ㄟM(jìn)行變換,最后指出,可以通過對(duì)新模型作最小二乘擬合等方法,觀察變換后的模型其數(shù)據(jù)的擬合程度,以確定模型的優(yōu)劣。