The document discusses the effects of bad components in Jordanian cement on the quality of constructions. It finds that as the percentage of bad components like gypsum increases in cement, the quality of the cement and resulting constructions decreases. A linear regression equation is developed showing quality of constructions negatively correlates with percentage of bad components. The key conclusion is that construction quality depends on factors like cement quality, and higher levels of bad components in cement lower both the cement and construction quality.