There are different ways to model a set of data. In this task we will see how to create a model with the tools that GeoGebra has. [br][br]Remember that in the internal assessment you will have to perform algebraically most of this processes.
In the applet below you will find attached the US. Dollar/Uruguayan peso Exchange rate for some months.[br][br]Select columns B and C and then right click > create > list of points. the coordinates [math]\left(B_i,C_i\right);i=1\cdots14[/math] will appear.[br][br]What type of function can model this data?[br][br]Select columns B and C again and with the tool [icon]/images/ggb/toolbar/mode_twovarstats.png[/icon] Find the model that you think will fit the most.[br][br]Write your model in the input bar and check if it really fits your model.
State some limitation that you see of the model.
Now look for a model using the sine function ([math]Asen\left(Bx-C\right)+D[/math] ) [br][br]Use the coordinates that GeoGebra provides but do it yourself. Do not use any GeoGebra has to analyze the data,[br][br]Input your model in the input bar.
In July 2016 the exchange rate is increasing or decreasing?