The number of times a particular item occurs in a given data is called its
variation
frequency
cumulative frequency
class-size
If the cumulative frequency at a particular class interval 30 -35 is 19 and the cumulative frequency at the next class -interval i.e 35-40 is 27 , the frequency at 35-40 is __________
Explain the meaning of each of the following terms. (i) Variate (ii) Class interval (iii) Class size (iv) Class mark (v) Class limint (vi) True class limits (vii) Frequency of a class (viii) Cumulative frequency of a class