8) a) What is meant by a class frequency of (i) first order (ii) third order? How would you express a class
frequency of first order in terms of class frequencies of higher orders? [6]
b) If a collection contains N items, each of which is characterized by one or more of the attributes A,
B, C and D. Show that with the usual notations
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has cul idm do idm sim idm cul off CSS off sign sun order grid sorry do off
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