Tables and graphs > Combine/compareExercises
By migration balance we mean the difference between the number of people immigrating to The Netherlands and the number of people emigrating from The Netherlands. In the graph you see data about the migration of Maroccan and Turkish people to and from The Netherlands in the period 1980 - 1991.
What is the meaning of points of intersection of the "immigration" and "emigration" graphs for the same population group?
What is the meaning of the points of intersection of the two immigration graphs?
For which of these two population groups was the migration balance negative in this period?
Based on the above, can you say that this population group decreased in numbers in The Netherlands?
It is remarkable that immigration is much lower in the years 1982 - 1984 than in other years and that emigration is higher during those years. Give some possible reasons for this.
Draw the migration balance graph for the Turkish.
In which year does this migration balance decrease the most?
Shown are the graphs of the distance covered by two cyclists in a time trial. The graphs have been drawn in such a way that it looks as if the cyclists started simultaneously (in a time trial this is not the case).
What meaning do the two points of intersection in this graph have?
During what interval is cyclist A ahead of cyclist B?
At which moments do the cyclists have the same speed?
These graphs show how many pieces of a certain article (in thousands) a company has sold and how much profit (in thousands of euros) it has made doing so. is depicted against time in months after the introduction of the article.
How many pieces have been sold after months? And how much profit did this generate?
After how many pieces did the sale start generating a profit?
How many months before profit was being made?
Make a table of the profit (in thousands of euros) depending on the time in months.
Have another look at the school doctor chart for girls. By chaining the two P50-graphs you can make a graph of the weight as a function of the age of an average girl. Explain how you can do this and draw the graph.
This figure shows how horses and mules were replaced by tractors in the 20th century in the U.S.A..
The graphs intersect in a point. Does this point have a meaning? Explain your answer.
When was the number of tractors equal to the number of horses and mules?