【简答题】零相关 (zero correlation)
【简答题】相关系数(correlation coefficient)
【单选题】What type of correlation is shown in this graph?
A.
An illusory correlation
B.
A negative correlation
D.
A positive correlation
【简答题】如图所示,将少量的碘晶体放在烧杯中,上口放一个灌有冷水的烧瓶,烧杯下用酒精灯微微加热,这时烧杯中可看到有紫色的气体生成,这是碘的______现象;停止加热后,把烧瓶拿下来,可看见瓶底外壁有碘的晶体生成,这是碘的______现象.
【简答题】A) combination B) cooperativeness C) coherence D) correlation
【简答题】A.combination B.relationship C.regulation D.correlation
【简答题】完全负相关 (perfect negative correlation)
【简答题】如图所示,将少量的碘晶体放在烧杯中,上口放一个灌有冷水的烧瓶,烧杯下用酒精灯微微加热,这时烧杯中可看到有紫色的气体生成,这是碘的 现象;停止加热后,把烧瓶拿下来,可看见瓶底外壁有碘的晶体生成,这是碘的 现象.
【单选题】A correlation matrix shows the following:
A.
all simple correlation coefficients.
B.
all possible net regression coefficients.
C.
only positive correlation coefficients.
D.
the multiple regression equation.
【简答题】income 词性 _______ 词义 _______