A cab driver 5 days income was $250, $400, $750, $400 , $500. Then his average income is? Choose the correct option
A) $ 440	B) $ 450	C) $ 460	D) $ 470	E) $ 480

Rationale: "avg = sum of observations / number of observations avg income = ( 250 + 400 + 750 + 400 + 500 ) / 5 = 460 answer is c"
Answer: C