Golfing Store
The joint probability distribution of variables X and Y is shown in the table below,where X is the number of drivers and Y is the number of putters sold daily in a small golfing store.
-{Golfing Store Narrative} Verify that V(X + Y)= V(X)+ V(Y).Did you expect this result? Why?

Question

Golfing Store 
The joint probability distribution of variables X and Y is shown in the table below,where X is the number of drivers and Y is the number of putters sold daily in a small golfing store.  ​ ​
-{Golfing Store Narrative} Verify that V(X + Y)= V(X)+ V(Y).Did you expect this result? Why?

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The Answer of Golfing Store 
The joint probability distribution of variables X and Y is shown in the table below,where X is the number of drivers and Y is the number of putters sold daily in a small golfing store.  ​ ​
-{Golfing Store Narrative} Verify that V(X + Y)= V(X)+ V(Y).Did you expect this result? Why?

Golfing Store The Joint Probability Distribution of Variables X and Y Is