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The water-tax bills in (in rupee) of 30 ...

The water-tax bills in (in rupee) of 30 houses in a locality are given below:
144,184,130,195,132,134,196,114,212,174,188,210,202,145,175,154,174,178,166,146,135,115,120,114,140,188,179,166,210,208.
Construct a frequency distribution table with class size 10.

Text Solution

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The minimum observation is 114 and the maximum observation is 212.
`therefore "range"=(212-114)=98`
Class size=10.
Since `98 divide 10`=9.8, we should have 10 classes, each of size 10.
The class of equal size, convering the above data are:
114-124,124-134,134-144,144-154,154-164,164-174,174-184,184-194,194-204 and 204,214
The frequency distribution table may be presented as shown below:
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