Q7 of 43 Page 22

The number of times a particular item occurs in a given data is called its

The rate at which something occurs over a particular period of time or in a given sample is called its frequency.

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5

In a frequency distribution, the mid value of a class is 15 and the class interval is 4. The lower limit of the class is

 6

The mid-value of a class interval is 42. If the class size is 10, then the upper and lower limits of the class are:

 8

The width of each of nine classes in a frequency distribution is 2.5 and the lower class boundary of the lowest class 10.6. Then the upper class boundary of the highest class is

 9

Let l be the lower class limit of a class-interval in a frequency distribution and m be the mid-point of the class. Then, the upper class limit f the class is: