The water bills (in rupees) of 32 houses in a certain street for the period 1.1.98 to 31.3.98 are given below:
56, 43, 32, 38, 56, 24, 68, 85, 52, 47, 35, 58, 63, 74, 27, 84, 69, 35, 44, 75, 55, 30, 54, 65, 45, 67, 95, 72, 43, 65, 35, 59.

Tabulate the data and present the data as a cumulative frequency table using 70-79 as one of the class intervals.

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Solution

The minimum and maximum bills are 24 Rs. and 95 Rs.

The range is.

Given that 70-79 is a class-interval. So, the class size is.

Now calculate

Thus, the number of classes is 8.

The cumulative frequency distribution is the following:

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Similar questions

The water bills (in rupees) of 32 houses in a certain street for the period 01/01/98 to 31/03/98 given below:
56, 43, 32, 38, 56, 24, 68, 85, 52, 47,

35, 58, 63, 74, 27, 84, 69, 35, 44, 75,

55, 30, 54, 45, 67, 95, 72, 43, 65, 35, 59.

Tabulate the data and present the data as a cumulative frequency table using 70-79 as one of the class intervals.

Q. The electricity bills (in rupees) of 25 houses of a certain locality for a month are given below:
324, 700, 617, 400, 356, 365, 435, 506, 548, 736, 780, 378, 570, 685, 312, 630, 584, 674, 754, 776, 596, 745, 565, 763, 472.
Arrange the above data in increasing order and form a frequency table using equal class intervals, starting from 300−400, where 400 is not included.

The heights (in cm) of 30 students of a class are given below:
161, 155, 159, 153, 150, 158, 154, 158, 160, 148, 149, 162, 163, 159, 148, 153, 157, 151, 154, 157, 153, 156, 152, 156, 160, 152,147,155,155,157.
Prepare a frequency table as well as a cumulative frequency table with 160-165 (165 not included) as one of the class intervals.

Q. The heights (inAns cm) of 30 students of a class are given below:
161, 155, 159, 153, 150, 158, 154, 158, 160, 148, 149, 162, 163, 159, 148,
153, 157, 151, 154, 157, 153, 156, 152, 156, 160, 152, 147, 155, 155, 157.
Prepare a frequency table as well as a cumulative frequency table with 160 – 165 (165 not included) as one of the class intervals.

Q. The electricity bills (in rupees) of

25

houses in a locality are given below. Construct a grouped frequency distribution table with a class size of

75

170, 212, 252, 224, 310, 712, 412, 425, 322, 325, 192, 198, 230, 320, 412, 530, 602, 724, 370, 402, 317, 403, 405, 372, 413

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The minimum and maximum bills are 24 Rs. and 95 Rs. The range is. Given that 70-79 is a class-interval. So, the class size is. Now calculate Thus, the number of classes is 8. The cumulative frequency distribution is the following:

The minimum and maximum bills are 24 Rs. and 95 Rs.

The range is.

Given that 70-79 is a class-interval. So, the class size is.

Now calculate

Thus, the number of classes is 8.

The cumulative frequency distribution is the following: