In the following questions, a question is followed by data in the form of two statements labelled as I and II. You must decide whether the data given in the statements are sufficient to answer the questions.
Is the standard deviation of the ages of students in class A greater than standard deviation of the age of students in class B ?
(I) The difference between the ages of any two students in class A is always more than one year.
(II) No student in class B is more than 6 months older than any other student.
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