Although I did this investigation in Mathematics at the beginning of the year, I decided it was interesting to share this investigation as according to some estimates, Sweden’s population has reached ten million.

Introduction:

This will be a report based on the question, “When Will Sweden’s Population Reach 10 million”. I got interested in this question for 3 reasons. Firstly, I am Swedish so this makes sense that I am doing a population question regarding Sweden. Furthermore, Sweden is really close to hitting 10 million people and although Sweden is a relativity big country, there aren’t many people. Finally, last year we looked at the population in Humanities and I got interested why a developed country like Sweden has an increasing population. This investigation could help me lead to that conclusion and teach me more about my country that I call home (or at least, one of them).

Data Table:

	Year	Population (Millions)
	1900	5.14
	1910	5.499
	1920	5.876
	1930	6.131
	1940	6.356
	1950	7.014
	1960	7.485
	1970	8.043
	1980	8.311
	1990	8.559
	2000	8.872
	2010	9.378
	2016	9.903

 

Graph 1 (with a line of best fit as y=mx+b):

Here I have a graph that I made in TI-nspire CX calculator. As you can see I have the year on the x-axis and population on the y-axis. I drew first a line of best fit and using the equation above, I found that in this model, Sweden’s population of 10 million will happen in the year 2025. As you can see in this graph below:

I have graphed two functions: f(x)=10 and x=2025. I’ve rounded the equation from the graph before this because this equation gives me an exact answer for when Sweden’s Population will reach 10 million: 2025. This is, however, only what I get from a line graph, if I were to graph the line of best fit exponentially, it would be different so here it is:

Continue reading “When Will Sweden’s Population Reach 10 Million?”