Draw an ogive by less than method for the following data:
No. of rooms 1 2 3 4 5 6 7 8 9 10
No. of houses 4 9 22 28 24 12 8 6 5 2
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No. of rooms, No. of houses (f), Cumulative frequency. 1, 4, 4. 2, 9, 13. 3, 22, 35. 4, 28, 63. 5, 24, 87. 6, 12, 99 . 7, 8, 107. 8, 6, 113. 9, 5, 118. 10, 2, 120 ...
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