China therefore is a good case study in population growth trends, its analysis and prediction. This paper concentrates on population trends in China between 1950 and 2008, and outlines various models that could be used to represent the data.

A variable can be defined as a quantity or attribute that changes according to different situations in a certain process. In our case, the time (t) in years is a variable because it moves from 1950 to 1995. The second variable is population (P) of the people of China in millions. A parameter is a constant that varies from one group of equations to another. The parameters are m, the gradient and c the y-intercept. The graph below shows the population trends in China between 1950 and 1995.

Trends Seen in the Graph

From the graph, it can be noted that population in China has been increasing over the years. Between 1950 and 1975, the population increases at an increasing rate whereas, between 1975 and 1995, it increases steadily. This difference could be attributed to the one child policy that was introduced by the Chinese government in 1978, to curb population increase. The points in the above graph assume a linear pattern and if a line of best fit is drawn, it has a gradient of approximately 15.49 (calculated using technology). This means that China’s population grows by about 15.49 million people each year. ...Show more