In a frequency distribution table with 12 classes, the class-width is

1.	In a frequency distribution table with 12 classes, the class-width is 2.5 and the lowest class boundary is 8.1, then what is the upper class boundary of the highest class?
Answer» Upper class boundary = Lowest class boundary + width × number of classes = 8.1 + 2.5×12 = 8.1 + 30 = 38.1 Thus, upper class boundary of the highest class is 38.1.

In a frequency distribution table with 12 classes, the class-width is 2.5 and the lowest class boundary is 8.1, then what is the upper class boundary of the highest class?

Answer»

Upper class boundary = Lowest class boundary + width × number of classes

= 8.1 + 2.5×12

= 8.1 + 30

= 38.1

Thus, upper class boundary of the highest class is 38.1.

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In a frequency distribution table with 12 classes, the class-width is 2.5 and the lowest class boundary is 8.1, then what is the upper class boundary of the highest class?

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