Here is the base code
public class GraphingMethods
{
/**
* Constant used to request a max operation
*/
public final static int MAX = 0;
/**
* Constant used to request a min operation
*/
public final static int MIN = 1;
/**
* Constant used to request a sum operation
*/
public final static int SUM = 2;
/**
* Constant used to request an average operation
*/
public final static int AVG = 3;
/**
* The dataSource must consist of one or more lines. If there is notat least one line, the method throws an
* IllegalArgumentException whose message explains what iswrong.
*
* Each line must consist of some text (a key), followed by a tabcharacter, followed by
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