Secondary research involves the collection of data from an existing source, such as a survey or a review of an existing document. It can be an inexpensive and time-saving way to acquire data and to determine how best to approach a project, such as market research. The advantage of secondary research is that it is generally quick and easy to access, making it the ideal starting point for any project or research. However, there are also some disadvantages that must be taken into consideration.
Advantages of Secondary Research
One of the major advantages of secondary research is its affordability. Data collected from existing sources is typically free, or relatively cheap when compared to primary research. Furthermore, secondary research also saves time in comparison to primary research. Data collection is a quick process, as the researcher can access the data almost immediately after locating the source. Moreover, it often reveals trends in the larger population. This can be valuable to a company, as they can use the statistics to better understand the target market.
Disadvantages of Secondary Research
Despite the advantages of secondary research, it has some downsides. For example, the data collected may not be applicable to the researcher’s project. It can be difficult for the researcher to determine the accuracy of the data, as the researchers who collected the information may not have used reliable methods. Additionally, the data may not be up to date, as it may have been gathered years ago and does not reflect current market conditions. Finally, secondary research is limited in scope, as the researcher cannot ask for specific information.
Air Pollution Decreased in China
During the initial response to the COVID-19 pandemic, air pollution in China decreased drastically, showing the effectiveness of the response measures taken. According to an article published in the journal Nature, satellite images of China’s particulate matter (PM2.5) levels reveal that shutdown measures taken to contain COVID-19 in mid-January had a dramatic effect on air pollution levels. PM2.5 stands for particulate matter that is less than 2.5 micrometers in diameter, and is one of the most hazardous pollutants in the air. These particles can cause many respiratory and cardiovascular problems.
The imagery revealed that the levels of PM 2.5 decreased by 30 percent or more during the response to the virus outbreak. This showed a significant decrease compared to the same period in 2019. At the same time, nitrogen dioxide levels dropped by 40 to 50 percent. It is possible that some of the decrease was due to a change in seasons, with winter being colder than usual. Nevertheless, the effect of governmental response measures in decreasing air pollution levels cannot be overemphasized.
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