A cab driver 5 days income was $300, $150, $750, $200 , $600. Then his average income is?	Select:
A) $ 350
B) $ 375
C) $ 400
D) $ 425
E) $ 450

Rationale: "avg = sum of observations / number of observations avg income = ( 300 + 150 + 750 + 200 + 600 ) / 5 = 400 answer is c"
Answer: C