What is r2 for the regression in given problem? Explain its meaning
Problem :-
For the data given below, regress one variable on the other. Is there an implication of causality, or are both variables affected by a third?
|
Sample of annual transactions ($ millions)
|
Year
|
Credit card
|
Online debit card
|
2002
|
156
|
211
|
2003
|
204
|
280
|
2004
|
279
|
386
|
2005
|
472
|
551
|
2006
|
822
|
684
|
2007
|
1,213
|
905
|