Reducing class size enhances the student achievement.
Lesser the class size, more productive will be teaching methodology and more efficient will be the learning experience. For instance, a class of 100 students is being taught an econometric lesson involving complex data analysis will have a comparatively less productivity than the same class with a batch of 50 students. Important to note, because every class has a limited time period, within the one with less class size, students can learn and ask more about their queries compared to a class size with large student size. Hence, as the student learns efficiently about the subject, he is able to articulate the same in a more pragmatic way in real life, thus eventually helping them in their professional life in a better manner.
More education change earnings.
In a more global context, this statement stands true, though education is not the only factor affecting the earnings of an individual. In the present day world, all the jobs require a basic level of education and with the world now operating largely as a service dominated podium rather than a manufacturing one, education is required to obtain a sustainable level of earnings. Henceforth, more is the education level, higher will be the earnings. However, as said previously, education is not the only factor in the determination of earnings as over a time period, past work experience is a more significant factor while determining the appropriate earnings level for an individual. Still, level of education plays an important part in the determination of the earnings level.
Price elasticity changes the sales of cigarette.
Price elasticity measures the change in the demand of a commodity in response to change in the price levels. Stated otherwise, price elasticity measures consumer sensitivity to change in price levels. As for cigarettes, this product is classified under inelastic goods as smokers purchase cigarettes out of addiction and change in the price levels will not affect their demand. On the other hand, the percentage of casual smokers is negligible in the industry and therefore, including their demand elasticity in this discussion is invalid. Therefore, we assert that price elasticity will not have any effect on the sales of cigarettes as the addicted and regular smokers will continue to consume it irrespective of the change in the price levels. This is also validated by research papers which have confirmed price elasticity of cigarette consumption. (Why Is Demand For Cigarettes Inelastic? | Businessworld Research)
Environmental improvements change housing price
Over the years, real estate companies are being blamed for environmental degradation, including deforestation and loss of natural habitats for wildlife species. For this reason, regulators are imposing regulation on these companies to improve the quality of the environment and preserve the ecosystem while they design their building projects. As part of these regulations, real estate companies are facing constraints on land acquisition and associated developments. Hence, this entire scenario will impact the housing supply and consequently, the housing price also. In addition to land related regulations, environmental policies related to supply of lumber and teak will also impact the housing construction, thus elevating the cost of construction. All these factors will affect the price as well as the quantity of the housing market. (Environmental Regulations And The Housing Market: A Review Of The Literature)
References
Environmental Regulations And The Housing Market: A Review Of The Literature. College Of The Holy Cross, 2005, pp. 187-189, https://www.huduser.gov/periodicals/cityscpe/vol8num1/ch5.pdf.
"Popular Economics: Why Is Demand For Cigarettes Inelastic? | Businessworld Research". Research.Bworldonline.Com, 2017, http://research.bworldonline.com/popular-economics/story.php?id=114&title=Why-is-demand-for-cigarettes-inelastic?.