If significant economies of scale do exist, this will result in a positivecoefficient.
如果显着的规模经济不存在，此将产生积极的系数。
2
In the different years, the family 's expenditure on education and the family' s income have a positivecoefficient and their elastic coefficient is more than 1.
不同年度家庭教育支出与家庭收入呈正向变动关系，二者的弹性系数大于1。
3
Results The average equivalent sound level and the detectable rate of workers hearing loss were exponential positive correlation, the coefficient of correlation r was 0 812 45.