1. Whether in the past or the present society, numbers appear almost in all areas of our life from basic necessities to the national economic and political. First of all, numbers can help us to measure and identify existing resources accurately. For example, time is represented by numbers, knowing the exact time is the means by which we manage our time. As a matter of fact, we can also use numbers to measure the resources that we have, such as assets, wage or a country's GDP. What’s more, Numbers can provide us with the criteria for planning. A person can set his learning growth target. If someone scored 80 points in this test, he could set himself a 90-point goal in the next test. In this process, he will make efforts to achieve this goal. This is also true for businesses and countries, business or country can set up a detailed and practical plan at a certain stage. For example, to achieve a long-term goal to create more profit, a company can divide the process of achieving this goal into several stages, the company can develop a detailed plan to achieve long-term goals at each stage. In terms of a country, the government can make a numerical prediction of the target of a given policy and do their best to achieve the expected results. In addition, the numbers give us an objective comparison standard so that we can compare different things. There are many examples of this in life. For example, students can sort through the level of results, and everyone wants to compete for the first.
2. The differences between quantitative and qualitative research approaches are as follows. First, the purpose of qualitative research and quantitative research is different. Qualitative research is mainly an exploratory study. It is used to explore the underlying causes of the existence of things, development trend, and motivation and so on. Quantitative research conducted a systematic empirical study of social phenomena using statistical, mathematical or computational techniques and other methods. The goal of this research is to develop and apply mathematical models, theories, or assumptions related to social phenomena. Second, the methods of qualitative research and quantitative research are different. Some common methods of qualitative research include group discussions, personal interviews, and observation. The approaches adopted by the qualitative study are more about open-minded and subjective, which are usually led by the respondents. But for the quantitative study, the investigator will set several indicators in advance. These surveys are more objective, which are generally led by the investigator. In addition, the results of qualitative research and quantitative research are also different. The results of quantitative studies are generally expressed by a large amount of data, and its purpose is to enable researchers to interpret these data differences effectively and to analyze these data effectively. Quantitative research uses measurable data to discover facts and find research patterns.
Researchers can use qualitative research to analyze if the researcher does not understand the information about the area that they want to study, or if researchers know little about the customer's needs or customer's intention, or they want to explore the undiscovered needs. If the researcher has obtained some of the available information and he wants to extend the results to a larger group, they will perform quantitative studies based on known information for statistical analysis.