The wholesale price index, also known as WPI, is an important measure provided by theWorld Development Indicators. Businesses use it to compare their prices against industry standards to stay competitive. A low index value means one needs to lower or increase their costs if it’s high. Most co...
2.2. Water Poverty Index To evaluate water scarcity in Golestan Province, we used the Water Poverty Index (WPI) proposed by Sullivan [47]. The WPI index is composed of five components: • Resources (R): the amount of water available, by considering the seasonal and inter-annual variability...