Page 8 - 8-Math-12 INFORMATION HANDLING

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Histogram:

EXERCISE 10.1

1. The following data displays the number of draws of different categories of
bonds.
35, 55, 64, 70, 99, 89, 87, 65, 67, 38, 62, 60, 70, 78, 69, 86, 39, 71, 56, 75,
51, 99, 68, 95, 86, 53, 59, 50, 47, 55, 81, 80, 98, 51, 63, 66, 79, 85, 83, 70
Construct a frequency distribution table for the above data, with seven classes of equal
size and of class interval 10.
2. Listed below are the number of electricity units consumed by 50 households in a low
income group locality of Lahore.
55, 45, 64, 130, 66, 155, 80, 102, 62, 60, 101, 58, 75, 81, 111, 90, 55, 151,
66, 139, 77, 99, 67, 51, 50, 125, 83, 55, 136, 91, 86, 54, 78, 100, 113, 93,
104, 111, 113, 96, 96, 87, 109, 94, 129, 99, 69, 83, 97, 97
With 12 classes of equal width of 10, construct a frequency table for the electricity units
consumed.
3. The following list is of scores in a mathematics examination. Using the starting class
40 — 44 , set up a frequency distribution. List the class boundaries and class marks.
63, 88, 79, 92, 86, 87, 83, 78, 40, 67, 68, 76, 46, 81, 92, 77, 84, 76, 70, 66,
77, 75, 98, 81, 82, 81, 87, 78, 70, 60, 94, 79, 52, 82, 77, 81, 77, 70, 74, 61

version: 1.1

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