Construct a frequency table with equal class intervals from the given data on the daily wages (in ₹) of 28 labourers, taking one of the class intervals as 210 - 230 (230 not included).
220, 268, 258, 242, 210, 268, 272, 242, 311, 290, 300, 320, 319, 304, 302, 318, 306, 292, 254, 278, 210, 240, 280, 316, 306, 215, 256, 236
What is the range of the given data?

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Solution

Highest wages =320

Lowest wages =210

Range =320-210=110

Frequency distribution table

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Construct a frequency table with equal class intervals from the following data on the daily wages (in Rs.) of 28 labourers workiing in a factory, taking one of the class intervals as 210-230 (230 not included) .
220, 268, 258, 242, 210, 268, 272, 242, 311, 290, 300, 320, 319, 302,318, 306, 292, 254, 278, 210, 240, 280, 316, 306, 215, 256, 236.

Construct a frequency table with equal class intervals froin the following data on the monthly wages (in rupees) of 28 labourers working in a factory, taking one of the class intervals as 210-230 (230 not included): 220, 268, 258, 242, 210, 268, 272, 242, 311, 290, 300, 320, 319, 304, 302, 318, 306, 292, 254, 278, 210, 240, 280, 316, 306, 215, 256, 236.

Q. A grouped frequency table with class intervals of equal sizes using

250 - 270

(

270

not included in this interval) as one of the class interval is constructed for the following data :

268, 220, 368, 258, 242, 310, 272, 342,

310, 290, 300, 320, 319, 304, 402, 318,

406, 292, 354, 278, 210, 240, 330, 316,

406, 215, 258, 236.

The frequency of the class

310 - 330

is:

Question 8
A grouped frequency table with class intervals of equal sizes using 250 – 270 (270 not included in this interval) as one of the class intervals is constructed for the following data.

268, 220, 368, 258, 242, 310, 272, 342

310, 290, 300, 320, 319, 304, 402, 318

406, 292, 354, 278, 210, 240, 330, 316,
406, 215, 258, 236.

The frequency of class 310 - 330 is:

A) 4
B) 5
C) 6
D) 7

The top speed (in km/s) of 20 spaceships in Nix’s fleet are:

230, 235, 290, 210, 235, 236, 269, 245, 298, 290, 220, 260, 232, 233, 255, 245, 204, 208, 212, 240. Using tally marks, make a frequency table with intervals as 200–220, 220–240, and so on.

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Highest wages =320 Lowest wages =210 Range =320-210=110 Frequency distribution table

Highest wages =320

Lowest wages =210

Range =320-210=110

Frequency distribution table