Mathematics

Problem

A city council is interested in the number of houses in each street of a suburb, because it intends to place collection bins for unwanted clothing. The data they find is:


42	15	20	6	34	19	8	5	11	38	56	23	24	24
35	47	22	36	39	18	14	44	25	6	34	35	28	12
27	32	36	34	30	40	32	12	17	6	37	32

a. Construct a frequency table for this data using class intervals 0 - 9, 10 - 19, ..., 50 - 59. b. Hence draw a column graph to display the data. c. Write down the modal class. d. What percentage of the streets contain at least 20 houses?

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42	15	20	6	34	19	8	5	11	38	56	23	24	24
35	47	22	36	39	18	14	44	25	6	34	35	28	12
27	32	36	34	30	40	32	12	17	6	37	32


42	15	20	6	34	19	8	5	11	38	56	23	24	24
35	47	22	36	39	18	14	44	25	6	34	35	28	12
27	32	36	34	30	40	32	12	17	6	37	32


42	15	20	6	34	19	8	5	11	38	56	23	24	24
35	47	22	36	39	18	14	44	25	6	34	35	28	12
27	32	36	34	30	40	32	12	17	6	37	32